Submission #151099

#	Time	Username	Problem	Language	Result	Execution time	Memory
151099		karma	Bitaro the Brave (JOI19_ho_t1)	C++17	100 / 100	93 ms	10128 KiB

joi2019_ho_t1

#include <bits/stdc++.h>
using namespace std;

const int N = int(3e3) + 1;

string s[N];
long long res = 0;
int n, m, c[N], cur;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    cin >> n >> m;
    for(int i = 0; i < n; ++i) cin >> s[i];
    for(int i = n - 1; i >= 0; --i) {
        cur = 0;
        for(int j = 0; j < m; ++j) {
            if(s[i][j] == 'O') res += cur;
            else if(s[i][j] == 'I') ++c[j];
            else cur += c[j];
        }
    }
    cout << res;
}

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50