This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int h, w;
cin >> h >> w;
vector<vector<char>> grid(h, vector<char>(w));
vector<int> countO(h), countI(w);
for (int i = 0; i < h; ++i) {
for (int j = 0; j < w; ++j)
cin >> grid[i][j];
}
long long res = 0;
for (int i = h - 1; i >= 0; --i) {
for (int j = w - 1; j >= 0; --j) {
countO[i] += grid[i][j] == 'O';
countI[j] += grid[i][j] == 'I';
if (grid[i][j] == 'J')
res += countI[j] * countO[i];
}
}
cout << res;
}
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