Submission #3235244

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Source Code Expand

#include <cstdio>
#include <iostream>
#include <string>
#include <algorithm>
#include <cstring>
#include <utility>
#include <vector>
#include <map>
#include <set>
#include <cmath>
#include <queue>
#include <stack>
#include <deque>
using namespace std;
typedef pair<int, int> pii;
typedef long long LL;
const int MAXN = 123456;
char s[MAXN];

int main() {
    scanf("%s", s + 1);
    int n = strlen(s + 1);
    if (n == 1) {
       printf("1\n");
       return 0;
    }
    int cnt0 = 0, cnt1 = 0;
    if (s[1] == '1') cnt1 = 1;
    else cnt0 = 1;
    int ans = 0;
    for (int i = 2; i <= n; i++) {
        ans = max({ans, cnt0, cnt1});
        if (s[i] == s[i - 1]) {
           if (s[i] == '1') cnt1++;
           else cnt0++;
        } else {
           if (s[i] == '1') cnt1 = 1, cnt0 = 0;
           else cnt0 = 1, cnt1 = 0;
        }
    }
    ans = max({ans, cnt0, cnt1});
    if (ans < 2 && n > 2) ans = 2;
    printf("%d\n", ans);
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:21:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s", s + 1);
                       ^

Judge Result