제출 #1258761

#제출 시각아이디문제언어결과실행 시간메모리
1258761khanhanBitaro the Brave (JOI19_ho_t1)C++20
50 / 100
1094 ms9544 KiB
#include <bits/stdc++.h> using namespace std; int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int h, w; cin >> h >> w; vector<string> a(h); for (int i = 0; i < h; i++) { cin >> a[i]; } long long ans = 0; for (int i = 0; i < h; i++) { for (int k = i + 1; k < h; k++) { vector<int> demO(w + 1, 0); for (int j = w - 1; j >= 0; j--) { demO[j] = demO[j + 1] + (a[i][j] == 'O'); } for (int j = 0; j < w; j++) { if (a[i][j] == 'J' && a[k][j] == 'I') { ans += demO[j + 1]; } } } } cout << ans << "\n"; return 0; }
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