diff --git a/03-2-1.py b/03-2-1.py
new file mode 100644
index 0000000..b046ef7
--- /dev/null
+++ b/03-2-1.py
@@ -0,0 +1,3 @@
+d=open("/dev/stdin").readlines()
+def f(y,x=1):return sum(d[i][i*y//x%31]=='#' for i in range(0,323,x))
+print(f(1)*f(3)*f(5)*f(7)*f(1,2))