제출 #160527

#제출 시각아이디문제언어결과실행 시간메모리
160527dantoh000Bitaro the Brave (JOI19_ho_t1)C++14
100 / 100
92 ms10232 KiB
#include <bits/stdc++.h> using namespace std; int ct[3000]; int n,m; string s[3000]; long long ans; int main(){ ios::sync_with_stdio(0); cin.tie(0); cin >> n >> m; for (int i = 0; i < n; i++){ cin >> s[i]; } for (int i = n-1; i >= 0; i--){ for (int j = m-1, ct2 = 0; j >= 0; j--){ if (s[i][j] == 'O') ct2++; else if (s[i][j] == 'I') ct[j]++; else ans += ct[j]*ct2; } } cout << ans; }
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