This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
/* In The Name Of God */
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define sw sync_with_stdio
// #pragma GCC optimize("Ofast, unroll-loops, O3")
#define fast ios::sw(0),cin.tie(0),cout.tie(0);
const int N = 3e3 + 3, M = 1e9 + 7, inf = 1e18 + 8;
int h, w, ans; char c;
vector <pair<int, int>> ii, jj, oo;
signed main() {
fast; cin >> h >> w;
for (int i = 1; i <= h; ++i)
for (int j = 1; j <= w; ++j) {
cin >> c;
if (c == 'I')
ii.push_back({i, j});
else if (c == 'J')
jj.push_back({i, j});
else
oo.push_back({i, j});
}
for (auto[i, j] : jj)
for (auto [x, y] : oo)
if (x == i && j < y)
for (auto [a, b] : ii)
if (b == j && i < a) {
ans++;
}
cout << ans << '\n';
}
/*
.---. . .--.
| | | ) o
|--- .--.|--. |--: . ---.
| `--.| | | ) | .'
'---'`--'' `-'--'-' `-'---
*/
Compilation message (stderr)
joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:16:6: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
16 | for (int i = 1; i <= h; ++i)
| ^~~
joi2019_ho_t1.cpp:28:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
28 | for (auto[i, j] : jj)
| ^~~
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