Codeforces Round #360 A 简单模拟

A. Opponents

time limit per test

1 second

memory limit per test

256 megabytes

input

standard input

output

standard output

Arya has n opponents in the school. Each day he will fight with all opponents who are present this day. His opponents have some fighting plan that guarantees they will win, but implementing this plan requires presence of them all. That means if one day at least one of Arya's opponents is absent at the school, then Arya will beat all present opponents. Otherwise, if all opponents are present, then they will beat Arya.

For each opponent Arya knows his schedule — whether or not he is going to present on each particular day. Tell him the maximum number of consecutive days that he will beat all present opponents.

Note, that if some day there are no opponents present, Arya still considers he beats all the present opponents.

Input

The first line of the input contains two integers n and d (1 ≤ n, d ≤ 100) — the number of opponents and the number of days, respectively.

The i-th of the following d lines contains a string of length n consisting of characters '0' and '1'. The j-th character of this string is '0' if the j-th opponent is going to be absent on the i-th day.

Output

Print the only integer — the maximum number of consecutive days that Arya will beat all present opponents.

Examples

input

2 2
10
00

output

2

input

4 1
0100

output

1

input

4 5
1101
1111
0110
1011
1111

output

2

Note

In the first and the second samples, Arya will beat all present opponents each of the d days.

In the third sample, Arya will beat his opponents on days 1, 3 and 4 and his opponents will beat him on days 2 and 5. Thus, the maximum number of consecutive winning days is 2, which happens on days 3 and4.

题目大意：

输入n个敌人和d天，如果存在0，则说明Arya赢了，让输出Arya连续赢的最多天数。

这个题思路还是挺简单的，简单模拟就行~

代码实现：

#include<iostream>
#include<stdlib.h>
#include<stdio.h>
#include<cmath>
#include<algorithm>
#include<string>
#include<string.h>
using namespace std;

char a[105][105];     //定义为字符形式
int main() {
    int o, d;
    while (scanf("%d%d", &o, &d) != EOF) {
        for (int i = 0; i < d; i++) {
            scanf("%s", &a[i]);       //用字符串的形式输入
        }
        int ans=0;
        int cnt=0;         //记录连续赢的次数
        for (int i = 0; i < d; i++) {
            int flag = 0;
            for (int j = 0; j < o; j++) {
                if (a[i][j] == '0') {
                    cnt++;
                    flag = 1;     //如果赢了，标记为1
                    break;
                }
            }
            if (flag == 1) {
                ans = max(ans, cnt);      //不断更新连续赢的次数，找出最大的那个
            }
            else
                cnt = 0;        //如果遇到没有赢，一定想着要把cnt变成0，从0开始记录连续赢的次数
        }
        printf("%d\n", ans);
    }

    return 0;
}

Where there is a will, there is a way~Fighting together!!