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_base::sync_with_stdio(0);
cin.tie(0);
int h, w;
cin >> h >> w;
vector<string> m (h, "");
for (int i = 0; i < h; i++) {
cin >> m[i];
}
vector<int> c (h, 0);
int r = 0;
long long score = 0;
for (int i = h-1; i >= 0; i--) {
r = 0;
for (int j = w-1; j >= 0; j--) {
if (m[i][j] == 'J') {
score += (long long)r*c[j];
}
else if (m[i][j] == 'O') {
r++;
}
else {
c[j]++;
}
}
}
cout << score << '\n';
}
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