#include <bits/stdc++.h>
#define ll long long int
#define pll pair<ll, ll>
#define F first
#define S second
#define mp make_pair
#define pb push_back
#define F0R(i, n) for(auto i = 0; i < (n); i++)
#define FOR(i, a, b) for(auto i = (a); i <= (b); i++)
#define ROF(i, a, b) for(auto i = (a); i >= (b); i--)
using namespace std;
int main()
{
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
int n, m; cin >> n >> m;
string a[n]; F0R(i, n) cin >> a[i];
int preo[n + 5][m + 5], prei[n + 5][m + 5];
memset(preo, 0, sizeof(preo));
memset(prei, 0, sizeof(prei));
F0R(i, n) {
ROF(j, m - 1, 0) {
preo[i][j] = preo[i][j + 1] + (a[i][j] == 'O');
}
}
F0R(j, m) {
ROF(i, n - 1, 0) {
prei[i][j] = prei[i + 1][j] + (a[i][j] == 'I');
}
}
ll ans = 0;
F0R(i, n) {
F0R(j, m) {
if(a[i][j] == 'J') {
ans += prei[i][j] * preo[i][j];
}
}
}
cout << ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
5 ms |
384 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
512 KB |
Output is correct |
| 7 |
Correct |
5 ms |
384 KB |
Output is correct |
| 8 |
Correct |
5 ms |
512 KB |
Output is correct |
| 9 |
Correct |
5 ms |
384 KB |
Output is correct |
| 10 |
Correct |
5 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
512 KB |
Output is correct |
| 12 |
Correct |
5 ms |
384 KB |
Output is correct |
| 13 |
Correct |
5 ms |
384 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
5 ms |
384 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
512 KB |
Output is correct |
| 7 |
Correct |
5 ms |
384 KB |
Output is correct |
| 8 |
Correct |
5 ms |
512 KB |
Output is correct |
| 9 |
Correct |
5 ms |
384 KB |
Output is correct |
| 10 |
Correct |
5 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
512 KB |
Output is correct |
| 12 |
Correct |
5 ms |
384 KB |
Output is correct |
| 13 |
Correct |
5 ms |
384 KB |
Output is correct |
| 14 |
Correct |
8 ms |
2304 KB |
Output is correct |
| 15 |
Correct |
5 ms |
384 KB |
Output is correct |
| 16 |
Correct |
6 ms |
1664 KB |
Output is correct |
| 17 |
Correct |
5 ms |
384 KB |
Output is correct |
| 18 |
Correct |
9 ms |
2816 KB |
Output is correct |
| 19 |
Correct |
8 ms |
2688 KB |
Output is correct |
| 20 |
Correct |
8 ms |
2816 KB |
Output is correct |
| 21 |
Correct |
9 ms |
2816 KB |
Output is correct |
| 22 |
Correct |
8 ms |
2688 KB |
Output is correct |
| 23 |
Correct |
8 ms |
2816 KB |
Output is correct |
| 24 |
Correct |
9 ms |
2816 KB |
Output is correct |
| 25 |
Correct |
8 ms |
2688 KB |
Output is correct |
| 26 |
Correct |
8 ms |
2816 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
5 ms |
384 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
512 KB |
Output is correct |
| 7 |
Correct |
5 ms |
384 KB |
Output is correct |
| 8 |
Correct |
5 ms |
512 KB |
Output is correct |
| 9 |
Correct |
5 ms |
384 KB |
Output is correct |
| 10 |
Correct |
5 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
512 KB |
Output is correct |
| 12 |
Correct |
5 ms |
384 KB |
Output is correct |
| 13 |
Correct |
5 ms |
384 KB |
Output is correct |
| 14 |
Correct |
8 ms |
2304 KB |
Output is correct |
| 15 |
Correct |
5 ms |
384 KB |
Output is correct |
| 16 |
Correct |
6 ms |
1664 KB |
Output is correct |
| 17 |
Correct |
5 ms |
384 KB |
Output is correct |
| 18 |
Correct |
9 ms |
2816 KB |
Output is correct |
| 19 |
Correct |
8 ms |
2688 KB |
Output is correct |
| 20 |
Correct |
8 ms |
2816 KB |
Output is correct |
| 21 |
Correct |
9 ms |
2816 KB |
Output is correct |
| 22 |
Correct |
8 ms |
2688 KB |
Output is correct |
| 23 |
Correct |
8 ms |
2816 KB |
Output is correct |
| 24 |
Correct |
9 ms |
2816 KB |
Output is correct |
| 25 |
Correct |
8 ms |
2688 KB |
Output is correct |
| 26 |
Correct |
8 ms |
2816 KB |
Output is correct |
| 27 |
Correct |
288 ms |
82296 KB |
Output is correct |
| 28 |
Correct |
5 ms |
768 KB |
Output is correct |
| 29 |
Correct |
14 ms |
6912 KB |
Output is correct |
| 30 |
Correct |
5 ms |
640 KB |
Output is correct |
| 31 |
Correct |
208 ms |
62220 KB |
Output is correct |
| 32 |
Correct |
280 ms |
86264 KB |
Output is correct |
| 33 |
Correct |
286 ms |
86604 KB |
Output is correct |
| 34 |
Correct |
240 ms |
71160 KB |
Output is correct |
| 35 |
Correct |
275 ms |
86392 KB |
Output is correct |
| 36 |
Correct |
268 ms |
86648 KB |
Output is correct |
| 37 |
Correct |
304 ms |
86776 KB |
Output is correct |
| 38 |
Correct |
177 ms |
61688 KB |
Output is correct |
| 39 |
Correct |
179 ms |
62076 KB |
Output is correct |
