diff --git a/app/main.py b/app/main.py
index fa56336e..9d6cad29 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1 +1,31 @@
-# write your code here
+import random
+
+
+def flip_coin() -> dict[int: float]:
+    heads_all_counts = {k: 0 for k in range(0, 11)}
+    for _ in range(10000):
+        heads_count = [random.randint(0, 1) for _ in range(0, 10)].count(1)
+        heads_all_counts[heads_count] += 1
+    for key, value in heads_all_counts.items():
+        heads_all_counts[key] = value / 100
+    return heads_all_counts
+
+
+def draw_gaussian_distribution_graph() -> None:
+    import matplotlib.pyplot as plt
+    import numpy as np
+
+    coins = flip_coin()
+    xpoints = np.array(list(coins.keys()))
+    ypoints = np.array([round(x, 2) for x in list(coins.values())])
+
+    plt.xlabel("Heads count")
+    plt.ylabel("Drop percentage %")
+    plt.title("Gaussian distribution")
+    plt.ylim([0, 100])
+    plt.xlim([0, 10])
+
+    plt.plot(xpoints, ypoints)
+    plt.xticks(range(11))
+    plt.yticks(range(0, 101, 10))
+    plt.show()