complete 16395.py

zeta_python/completed/16395.py

@@ -0,0 +1,17 @@
+def C(n, k):
+    if C.M[n][k]:
+        return C.M[n][k]
+    elif k == 0 or k == n:
+        tmp = 1
+    else:
+        tmp = C(n - 1, k) + C(n - 1, k - 1)
+    C.M[n][k] = tmp
+    return tmp
+
+
+C.M = [[0] * (i + 1) for i in range(30)]
+C.M[0] = [1]
+C.M[1] = [1, 1]
+
+if __name__ == "__main__":
+    print(C(*map(lambda x: int(x) - 1, input().split())))