diff --git a/lab5/zad1/src/main.rs b/lab5/zad1/src/main.rs
index ec9d236..185d697 100644
--- a/lab5/zad1/src/main.rs
+++ b/lab5/zad1/src/main.rs
@@ -66,12 +66,22 @@ impl Graph {
     pub fn new_rand(size: usize) -> Self {
         Self {
             size,
-            edges: (0..size).map(|u|
-                (0..size).map(|v|
-                    if u == v { 0.0 }
-                        else { thread_rng().gen::<f64>() }
-                ).collect::<Vec<_>>())
-                    .collect::<Vec<_>>(),
+            edges: {
+                let mut edges = vec![vec![0.0; size]; size];
+
+                for i in 0..size {
+                    for j in 0..size {
+                        if i == j { continue }
+
+                        let w = thread_rng().gen::<f64>();
+
+                        edges[i][j] = w;
+                        edges[j][i] = w;
+                    }
+                }
+
+                edges
+            }
         }
     }