diff --git a/2021/day11/11.py b/2021/day11/11.py
new file mode 100644
index 0000000..b8dc80c
--- /dev/null
+++ b/2021/day11/11.py
@@ -0,0 +1,32 @@
+lines = [ [int(j) for j in list(i)] for i in open("input.txt", 'r').read().splitlines()]
+
+flashes = 0
+for i in range(100):
+    lines = [ [x+1 for x in y] for y in lines]
+    flashed = True
+    while flashed:
+        flashed = False
+        for x in range(10):
+            for y in range(10):
+                if lines[x][y] > 9:
+                    flashes += 1
+                    lines[x][y] = 0
+                    flashed = True
+                    if x != 0 and lines[x-1][y] != 0:
+                        lines[x-1][y] += 1 
+                    if x != 0 and y != 9 and lines[x-1][y+1] != 0:
+                        lines[x-1][y+1] += 1 
+                    if y != 9 and lines[x][y+1] != 0:
+                        lines[x][y+1] += 1 
+                    if x != 9 and y != 9 and lines[x+1][y+1] != 0: 
+                        lines[x+1][y+1] += 1 
+                    if x != 9 and lines[x+1][y] != 0:
+                        lines[x+1][y] += 1 
+                    if x != 9 and y != 0 and lines[x+1][y-1] != 0:
+                        lines[x+1][y-1] += 1 
+                    if y != 0 and lines[x][y-1] != 0:
+                        lines[x][y-1] += 1 
+                    if x != 0 and y != 0 and lines[x-1][y-1] != 0:
+                        lines[x-1][y-1] += 1 
+
+print(flashes)
\ No newline at end of file
diff --git a/2021/day11/input.txt b/2021/day11/input.txt
new file mode 100644
index 0000000..6fab2c0
--- /dev/null
+++ b/2021/day11/input.txt
@@ -0,0 +1,10 @@
+5723573158
+3154748563
+4783514878
+3848142375
+3637724151
+8583172484
+7747444184
+1613367882
+6228614227
+4732225334
diff --git a/2021/day11/input.txt.sample b/2021/day11/input.txt.sample
new file mode 100644
index 0000000..a3819c9
--- /dev/null
+++ b/2021/day11/input.txt.sample
@@ -0,0 +1,10 @@
+5483143223
+2745854711
+5264556173
+6141336146
+6357385478
+4167524645
+2176841721
+6882881134
+4846848554
+5283751526
\ No newline at end of file