Все задачи на 5.10.17 13:00

uts/session_py/4.py

@@ -0,0 +1,10 @@
+import sys
+sys.stdin = open("input.txt", "r")
+sys.stdout = open("output.txt", "w")
+n = int(input())
+count = 0
+for i in range(n):
+    for j in list(map(int, input().split())):
+        count = count + j
+count = count / 2
+print(int(count))