3270: 王国比赛(kingdom)

Memory Limit:256 MB Time Limit:1.000 S
Judge Style:Text Compare Creator:
Submit:77 Solved:23

Description



Input

Output

输出一个整数,表示你最后有几题预测正确。

Sample Input Copy

3 3
1 0 1
0 1 1
0 1 0
1 1 1

Sample Output Copy

2

HINT