Все задачи на 5.10.17 13:00

uts/uts_2017_sum_py/3/B.py

@@ -0,0 +1,17 @@
+import sys
+
+sys.stdin = open('count.in', 'r')
+sys.stdout = open('count.out', 'w')
+
+m, n = list(map(int, input().split()))
+x = [[0 for i in range(31)] for j in range(31)]
+s = 0
+for i in range(31):
+    x[1][i] = 1
+for i in range(2, m+1):
+    for j in range(n+1):
+        for k in range(j+1):
+            x[i][j] += x[i-1][k]
+for i in range(n+1):
+    s += x[m][i]
+print(s)