Submission #1247342

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Source Code Expand

#define _CRT_SECURE_NO_WARNINGS
#include <cstdio>
#include <cstring>

using namespace std;

int main()
{
    const char I = 'I';
    const char O = 'O';

    char S[50001];

    if (scanf("%s", S) < 1) return 0;

    int cnt = 0;
    int sz = strlen(S);
    char last = '#';
    for (int i = 0; i < sz; i++)
    {
        if (!(cnt % 2) && S[i] == I)
        {
            cnt++;
            last = S[i];
        }
        else if (cnt % 2 && S[i] == O)
        {
            cnt++;
            last = S[i];
        }
    }

    if (last == O) cnt--;

    printf("%d\n", cnt);
    return 0;
}

Submission Info

Judge Result