diff --git a/lab5/src/algo/config.rs b/lab5/src/algo/config.rs
new file mode 100644
index 0000000..312b88f
--- /dev/null
+++ b/lab5/src/algo/config.rs
@@ -0,0 +1,3 @@
+pub struct GeneticSimulationConfig {
+    pub mutation_chance: f64,
+}
diff --git a/lab5/src/algo/mod.rs b/lab5/src/algo/mod.rs
index fef34b6..abcda07 100644
--- a/lab5/src/algo/mod.rs
+++ b/lab5/src/algo/mod.rs
@@ -1,3 +1,7 @@
 mod product;
 mod mutate;
-mod simulation;
\ No newline at end of file
+mod simulation;
+mod config;
+
+pub use config::GeneticSimulationConfig;
+pub use simulation::GeneticSimulationState;
\ No newline at end of file
diff --git a/lab5/src/algo/simulation.rs b/lab5/src/algo/simulation.rs
index e69de29..9871680 100644
--- a/lab5/src/algo/simulation.rs
+++ b/lab5/src/algo/simulation.rs
@@ -0,0 +1,85 @@
+use crate::algo::config::GeneticSimulationConfig;
+use crate::algo::mutate::mutate;
+use crate::algo::product::product;
+use bgtu_ai_utility::graph::CompleteGraph;
+use bgtu_ai_utility::weighted_random_index;
+use rand::prelude::SliceRandom;
+use rand::Rng;
+
+pub struct GeneticSimulationState<'a> {
+   pub config: &'a GeneticSimulationConfig,
+   pub graph: &'a CompleteGraph<()>,
+   pub chromosome_size: usize,
+   pub population: Vec<Vec<usize>>,
+}
+
+impl<'a> GeneticSimulationState<'a> {
+    pub fn new(
+        config: &'a GeneticSimulationConfig,
+        graph: &'a CompleteGraph<()>,
+        chromosome_size: usize,
+        population_size: usize,
+        rng: &mut impl Rng,
+    ) -> Self {
+        let mut population = vec![vec![0; chromosome_size]; population_size];
+        for chromosome in population.iter_mut() {
+            for (i, gene) in chromosome.iter_mut().enumerate() {
+                *gene = i;
+            }
+            chromosome.shuffle(rng)
+        }
+
+        return Self {
+            config,
+            graph,
+            chromosome_size,
+            population,
+        };
+    }
+
+    pub fn next_generation(&mut self, rng: &mut impl Rng) {
+        let mut new_generation = Vec::new();
+        let weights = self.calculate_population_weights(self.population.as_slice());
+
+        for _ in 0..self.population.len() {
+            let mut new_chromosome = vec![0; self.chromosome_size];
+
+            product(
+                &self.population[weighted_random_index(rng, weights.as_slice(), |w| *w).unwrap()],
+                &self.population[weighted_random_index(rng, weights.as_slice(), |w| *w).unwrap()],
+                &mut new_chromosome,
+                rng,
+            );
+
+            new_generation.push(new_chromosome);
+        }
+
+        for h in new_generation.iter_mut() {
+            if rng.random::<f64>() < self.config.mutation_chance {
+                mutate(h.as_mut(), rng);
+            }
+        }
+
+        self.population = new_generation;
+    }
+
+    fn calculate_population_weights(&self, population: &[Vec<usize>]) -> Vec<f64> {
+        return population
+            .iter()
+            .map(|h| {
+                let mut weight = 0.0;
+                h.iter().reduce(|a, b| {
+                    match self.graph.vertices[*a]
+                        .iter()
+                        .find(|e| self.graph.edges[**e].another(*a) == *b)
+                    {
+                        None => unreachable!(),
+                        Some(e) => weight += self.graph.edges[*e].length,
+                    };
+                    return b;
+                });
+                return 1.0 / weight;
+            })
+            .collect::<Vec<f64>>();
+    }
+}
diff --git a/lab5/src/gui/data.rs b/lab5/src/gui/data.rs
new file mode 100644
index 0000000..8e42979
--- /dev/null
+++ b/lab5/src/gui/data.rs
@@ -0,0 +1,52 @@
+use crate::algo::{GeneticSimulationConfig, GeneticSimulationState};
+use bgtu_ai_utility::UpdatePending;
+use bgtu_ai_utility::graph::CompleteGraph;
+use std::pin::Pin;
+use std::ptr::NonNull;
+
+pub(crate) struct GeneticVisualisationData {
+    pub config: GeneticSimulationConfig,
+    pub graph: CompleteGraph<()>,
+}
+
+pub(crate) enum GeneticVisualisationState<'cfg> {
+    Edit {
+        config: &'cfg mut GeneticSimulationConfig,
+        graph: &'cfg mut CompleteGraph<()>,
+        vertex_update: UpdatePending,
+        population_size: usize,
+        generations_count: usize,
+    },
+    Running {
+        simulation: GeneticSimulationState<'cfg>,
+        generations_done: usize,
+        generations_count: usize,
+        vertex_locations: Vec<(f32, f32)>,
+    },
+}
+
+pub(crate) struct GeneticVisualisationApp {
+    pub data: Pin<Box<GeneticVisualisationData>>,
+    pub state: GeneticVisualisationState<'static /* actually not but fuck rust */>,
+}
+
+impl GeneticVisualisationApp {
+    pub fn new() -> Self {
+        let mut data = Box::pin(GeneticVisualisationData {
+            config: GeneticSimulationConfig {
+                mutation_chance: 0.1,
+            },
+            graph: CompleteGraph::new(),
+        });
+
+        let state = GeneticVisualisationState::Edit {
+            config: unsafe { NonNull::from_mut(&mut data.config).as_mut() },
+            graph: unsafe { NonNull::from_mut(&mut data.graph).as_mut() },
+            population_size: 1,
+            generations_count: 2,
+            vertex_update: UpdatePending::NoChange,
+        };
+
+        return Self { data, state };
+    }
+}
diff --git a/lab5/src/gui/graph.rs b/lab5/src/gui/graph.rs
new file mode 100644
index 0000000..eb1b11c
--- /dev/null
+++ b/lab5/src/gui/graph.rs
@@ -0,0 +1,69 @@
+use crate::algo::GeneticSimulationState;
+use bgtu_ai_utility::gui::render_graph;
+use eframe::egui::Ui;
+use rand::{Rng, rng};
+
+pub(crate) fn graph_with_controls(
+    ui: &mut Ui,
+    vertex_locations: &mut [(f32, f32)],
+    data: &mut GeneticSimulationState,
+    generations_left: &mut usize,
+    exit: &mut bool,
+) {
+    ui.vertical(|ui| {
+        ui.horizontal(|ui| {
+            if ui.button("Exit").clicked() {
+                *exit = true;
+            }
+
+            ui.add_enabled_ui(*generations_left > 0, |ui| {
+                if ui.button("Step").clicked() {
+                    data.next_generation(&mut rng());
+                    *generations_left -= 1;
+                }
+            });
+
+            ui.label("");
+        });
+        draw_ants(ui, vertex_locations, data);
+        if ui.input(|i| i.viewport().close_requested()) {
+            *exit = true;
+        }
+    });
+}
+
+fn draw_ants(ui: &mut Ui, vertex_locations: &mut [(f32, f32)], data: &GeneticSimulationState) {
+    let cap = data.population.len() as f64;
+    let mut usage = vec![0usize; data.graph.edges.capacity()];
+    for chromosome in data.population.iter() {
+        chromosome.iter().reduce(|a, b| {
+            match data.graph.vertices[*a]
+                .iter()
+                .position(|e| data.graph.edges[*e].another(*a) == *b)
+            {
+                None => unreachable!(),
+                Some(e) => usage[e] += 1,
+            };
+            return b;
+        });
+    }
+
+    render_graph(
+        ui,
+        &data.graph.vertices,
+        vertex_locations,
+        &data.graph.edges,
+        |ei, _| usage[ei] as f64 / cap,
+    )
+}
+
+pub(crate) fn gen_vertex_locations(rng: &mut impl Rng, count: usize) -> Vec<(f32, f32)> {
+    let mut v = Vec::new();
+    for _ in 0..count {
+        v.push((
+            rng.random::<f32>() * 0.8 + 0.1,
+            rng.random::<f32>() * 0.8 + 0.1,
+        ));
+    }
+    return v;
+}
diff --git a/lab5/src/gui/input.rs b/lab5/src/gui/input.rs
new file mode 100644
index 0000000..8534e0e
--- /dev/null
+++ b/lab5/src/gui/input.rs
@@ -0,0 +1,60 @@
+use crate::algo::GeneticSimulationConfig;
+use bgtu_ai_utility::gui::const_mut_switch::{
+    ConstMutSwitchUi, RefType, _ConstMutSwitchUiCallback,
+};
+use bgtu_ai_utility::gui::graph_lengths_table::{draw_lengths_table, Graph};
+use bgtu_ai_utility::UpdatePending;
+
+
+pub(crate) fn input<Ctx: ConstMutSwitchUi>(
+    ctx: &mut Ctx,
+    mut config: <Ctx::RefType as RefType>::Ref<'_, GeneticSimulationConfig>,
+    graph: &mut impl Graph<RefType = Ctx::RefType>,
+    mut population_size: <Ctx::RefType as RefType>::Ref<'_, usize>,
+    mut generations_count: <Ctx::RefType as RefType>::Ref<'_, usize>,
+    mut vertex_update: <Ctx::RefType as RefType>::Ref<'_, UpdatePending>,
+    mut launch: <Ctx::RefType as RefType>::Ref<'_, bool>,
+) {
+    ctx.labeled_slider("Population size", 1..=100, 1.0, &mut population_size);
+
+    ctx.space();
+
+    ctx.labeled_slider("Generations", 1..=100, 1.0, &mut generations_count);
+
+    ctx.space();
+
+    ctx.labeled_slider(
+        "Mutation chance",
+        0.0..=1.0,
+        0.001,
+        &mut Ctx::RefType::_get(
+            &mut config,
+            |config| &config.mutation_chance,
+            |config| &mut config.mutation_chance,
+        ),
+    );
+
+    ctx.space();
+
+    ctx.space();
+
+    ctx.horizontal(ControlsRow {
+        update: &mut vertex_update,
+        run: &mut launch,
+    });
+
+    draw_lengths_table(ctx, graph, vertex_update)
+}
+
+struct ControlsRow<'uu, 'u, 'rr, 'r, RT: RefType> {
+    update: &'uu mut RT::Ref<'u, UpdatePending>,
+    run: &'rr mut RT::Ref<'r, bool>,
+}
+
+impl<RT: RefType> _ConstMutSwitchUiCallback<RT> for ControlsRow<'_, '_, '_, '_, RT> {
+    fn render(self, ctx: &mut impl ConstMutSwitchUi<RefType = RT>) {
+        ctx.button("Add vertex", self.update, |d| *d = UpdatePending::Add);
+        ctx.separator();
+        ctx.button("Run", self.run, |d| *d = true);
+    }
+}
diff --git a/lab5/src/gui/mod.rs b/lab5/src/gui/mod.rs
new file mode 100644
index 0000000..93fa629
--- /dev/null
+++ b/lab5/src/gui/mod.rs
@@ -0,0 +1,7 @@
+mod data;
+mod input;
+mod graph;
+
+pub(crate) use data::{GeneticVisualisationApp, GeneticVisualisationData, GeneticVisualisationState};
+pub(crate) use input::input;
+pub(crate) use graph::{gen_vertex_locations, graph_with_controls};
\ No newline at end of file
diff --git a/lab5/src/main.rs b/lab5/src/main.rs
index 48ca370..76b21a5 100644
--- a/lab5/src/main.rs
+++ b/lab5/src/main.rs
@@ -1,176 +1,128 @@
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
 
 mod algo;
+mod gui;
 
+use crate::algo::GeneticSimulationState;
+use bgtu_ai_utility::UpdatePending;
+use bgtu_ai_utility::gui::boot_eframe;
+use bgtu_ai_utility::gui::const_mut_switch::{ConstUI, MutUI};
+use bgtu_ai_utility::gui::graph_lengths_table::{ConstGraph, MutableGraph};
+use bgtu_ai_utility::gui::subwindow;
 use eframe::egui;
-use eframe::egui::{Frame, Ui};
-use eframe::emath::Numeric;
-use std::collections::HashSet;
-use std::ops::RangeInclusive;
-use tsp_utility::graph::{EdgesVec, VerticesVec};
-use tsp_utility::gui::lengths_table::{UpdatePending, draw_lengths_table};
+use rand::rng;
+use std::ptr::NonNull;
 
 fn main() -> eframe::Result {
-    let options = eframe::NativeOptions {
-        viewport: egui::ViewportBuilder::default().with_inner_size([640.0, 400.0]),
-        ..Default::default()
-    };
-    eframe::run_native(
-        "Ants simulation",
-        options,
-        Box::new(|_cc| Ok(Box::<MyApp>::default())),
-    )
+    return boot_eframe("Genetic simulation", || gui::GeneticVisualisationApp::new());
 }
 
-enum ViewState {
-    Stop,
-    Running { lastUpdateTimestamp: u64 },
-    VertexMove { vertexId: usize },
-}
-
-enum GlobalState {
-    Edit {},
-    Running { view_state: ViewState },
-}
-
-struct MyApp {
-    edges: EdgesVec<()>,
-    vertices: VerticesVec,
-    vertex_update: UpdatePending,
-    population_size: usize,
-    rounds: usize,
-    mutation_chance: f64,
-    state: GlobalState,
-}
-
-impl Default for MyApp {
-    fn default() -> Self {
-        return Self {
-            edges: EdgesVec::new(),
-            vertices: VerticesVec::new(),
-            vertex_update: UpdatePending::NoChange,
-            population_size: 2,
-            rounds: 1,
-            mutation_chance: 0.1,
-            state: GlobalState::Edit {},
-        };
-    }
-}
-
-fn _slider<T: Numeric>(
-    ui: &mut Ui,
-    name: &str,
-    storage: &mut T,
-    range: RangeInclusive<T>,
-    step: f64,
-) {
-    let label = ui.label(name);
-
-    ui.scope(|ui| {
-        ui.spacing_mut().slider_width = ui.available_width()
-            - ui.spacing().interact_size.x
-            - ui.spacing().button_padding.x * 2.0;
-        ui.add(egui::Slider::new(storage, range).step_by(step))
-            .labelled_by(label.id);
-    });
-}
-
-impl eframe::App for MyApp {
+impl eframe::App for gui::GeneticVisualisationApp {
     fn update(&mut self, ui: &eframe::egui::Context, _frame: &mut eframe::Frame) {
-        egui::CentralPanel::default().show(ui, |ui| match self.state {
-            GlobalState::Edit {} => {
-                match self.vertex_update {
+        let state_ptr = NonNull::from_mut(&mut self.state);
+        egui::CentralPanel::default().show(ui, |ui| match &mut self.state {
+            gui::GeneticVisualisationState::Edit {
+                config,
+                graph,
+                vertex_update,
+                population_size,
+                generations_count,
+            } => {
+                match vertex_update {
                     UpdatePending::NoChange => {}
                     UpdatePending::Add => {
-                        let new_vi = self.vertices.add(HashSet::new());
-                        let mut newEdgesSet = HashSet::new();
-                        for (vi, v) in self.vertices.iter_indexed_mut() {
-                            if (vi == new_vi) {
-                                continue;
-                            }
-                            let ei = self.edges.add(new_vi, vi, 1.0, ());
-                            newEdgesSet.insert(ei);
-                            v.insert(ei);
-                        }
-                        self.vertices[new_vi] = newEdgesSet;
-                        self.vertex_update = UpdatePending::NoChange;
+                        graph.add_vertex(|| ());
+                        *vertex_update = UpdatePending::NoChange;
                     }
                     UpdatePending::Remove(vi) => {
-                        let mut eis = Vec::with_capacity(self.vertices[vi].len());
-                        for ei in self.vertices[vi].iter() {
-                            eis.push(*ei)
-                        }
-                        for ei in eis {
-                            self.vertices[self.edges[ei].another(vi)].remove(&ei);
-                            self.edges.remove(ei);
-                        }
-                        self.vertices.remove(vi);
-                        self.vertex_update = UpdatePending::NoChange;
+                        graph.remove_vertex(*vi);
+                        *vertex_update = UpdatePending::NoChange;
                     }
                 }
-                edit_panel(self, ui)
-            }
-            GlobalState::Running { .. } => {
-                ui.add_enabled_ui(false, |ui| edit_panel(self, ui));
-                ui.ctx().show_viewport_immediate(
-                    egui::ViewportId::from_hash_of("Visualisation"),
-                    egui::ViewportBuilder::default()
-                        .with_title("Visualisation")
-                        .with_inner_size([640.0, 480.0])
-                        .with_resizable(false),
-                    |ui, _| {
-                        egui::CentralPanel::default()
-                            .frame(Frame::default().inner_margin(0.0))
-                            .show(ui, |ui| visualization_panel(self, ui));
-                    },
+
+                let mut run = false;
+                gui::input(
+                    &mut MutUI { ui },
+                    *config,
+                    &mut MutableGraph { graph },
+                    population_size,
+                    generations_count,
+                    vertex_update,
+                    &mut run,
                 );
+
+                if run {
+                    let ns = gui::GeneticVisualisationState::Running {
+                        simulation: GeneticSimulationState::new(
+                            *config,
+                            *graph,
+                            graph.vertex_count(),
+                            *population_size,
+                            &mut rng(),
+                        ),
+                        generations_done: 0,
+                        vertex_locations: gui::gen_vertex_locations(
+                            &mut rng(),
+                            graph.vertices.capacity(),
+                        ),
+                        generations_count: *generations_count,
+                    };
+                    unsafe {
+                        state_ptr.write(ns);
+                    }
+                }
+            }
+            gui::GeneticVisualisationState::Running {
+                simulation,
+                generations_done,
+                generations_count,
+                vertex_locations,
+            } => {
+                gui::input(
+                    &mut ConstUI { ui },
+                    &simulation.config,
+                    &mut ConstGraph {
+                        graph: &simulation.graph,
+                    },
+                    &simulation.population.len(),
+                    generations_count,
+                    &UpdatePending::NoChange,
+                    &false,
+                );
+
+                let mut exit = false;
+                let mut generations_left = *generations_count - *generations_done;
+                subwindow(
+                    ui,
+                    "visualisation",
+                    "Visualisation",
+                    |vb| vb.with_inner_size([640.0, 480.0]),
+                    |ui| {
+                        gui::graph_with_controls(
+                            ui,
+                            vertex_locations,
+                            simulation,
+                            &mut generations_left,
+                            &mut exit,
+                        )
+                    },
+                )
+                .on_close(|| exit = true);
+                *generations_done = *generations_count - generations_left;
+
+                if exit {
+                    let ns = gui::GeneticVisualisationState::Edit {
+                        config: unsafe { NonNull::from_mut(&mut self.data.config).as_mut() },
+                        graph: unsafe { NonNull::from_mut(&mut self.data.graph).as_mut() },
+                        vertex_update: UpdatePending::NoChange,
+                        population_size: simulation.population.len(),
+                        generations_count: *generations_count,
+                    };
+                    unsafe {
+                        state_ptr.write(ns);
+                    }
+                }
             }
         });
     }
 }
-
-fn edit_panel(data: &mut MyApp, ui: &mut Ui) {
-    let run: bool;
-
-    _slider(
-        ui,
-        "Population size",
-        &mut data.population_size,
-        2..=1000,
-        1.0,
-    );
-    ui.label("");
-    _slider(ui, "Rounds", &mut data.rounds, 1..=100, 1.0);
-    ui.label("");
-    _slider(
-        ui,
-        "Mutation chance",
-        &mut data.mutation_chance,
-        0.0..=1.0,
-        0.001,
-    );
-
-    ui.horizontal(|ui| {
-        if ui.button("Add vertex").clicked() {
-            data.vertex_update = UpdatePending::Add;
-        }
-        ui.separator();
-        let run = ui.button("Run").clicked();
-    });
-
-    draw_lengths_table(
-        ui,
-        &mut data.vertices,
-        &mut data.edges,
-        &mut data.vertex_update,
-    )
-}
-
-fn visualization_panel(data: &mut MyApp, ui: &mut Ui) {
-    ui.horizontal(|ui| {
-        if ui.button("Exit").clicked() {}
-
-        if ui.button("Step").clicked() {}
-        ui.label("");
-    });
-}