#include<bits/stdc++.h>
using namespace std;
#define endl '\n';
typedef long long ll;
int H,W;
ll ans = 0;
vector<pair<int,int>> J;
int dpI[3003][3003];
int dpO[3003][3003];
string S[3003];
int main() {
ios::sync_with_stdio(0); cin.tie(0);
cin >> H >> W;
for(int i = 1; i <= H; i++) {
string s; cin >> s;
S[i] = s;
}
for(int i = H; i >= 1; i--) {
for(int j = W-1; j >= 0; j--) {
dpI[j][i-1] += dpI[j][i];
dpO[i][j-1] += dpO[i][j];
if(S[i][j] == 'J') {
J.push_back({i,j});
}
else if(S[i][j] == 'I') {
dpI[j][i-1] += 1;
}
else if(S[i][j] == 'O') {
dpO[i][j-1] += 1;
}
}
}
for(auto e : J) {
int i = e.first;
int j = e.second;
//cout << endl;
//cout << "i = "<< i << " j = " << j << endl;
//cout << dpI[j][i] << " " << dpO[i][j] << endl;
ans += (dpI[j][i] * dpO[i][j]);
//cout << ans << endl
}
cout << ans;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
1328 KB |
Output is correct |
6 |
Correct |
1 ms |
1108 KB |
Output is correct |
7 |
Correct |
1 ms |
1236 KB |
Output is correct |
8 |
Correct |
2 ms |
1324 KB |
Output is correct |
9 |
Correct |
2 ms |
1236 KB |
Output is correct |
10 |
Correct |
1 ms |
1236 KB |
Output is correct |
11 |
Correct |
1 ms |
1364 KB |
Output is correct |
12 |
Correct |
1 ms |
1236 KB |
Output is correct |
13 |
Correct |
1 ms |
1324 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
1328 KB |
Output is correct |
6 |
Correct |
1 ms |
1108 KB |
Output is correct |
7 |
Correct |
1 ms |
1236 KB |
Output is correct |
8 |
Correct |
2 ms |
1324 KB |
Output is correct |
9 |
Correct |
2 ms |
1236 KB |
Output is correct |
10 |
Correct |
1 ms |
1236 KB |
Output is correct |
11 |
Correct |
1 ms |
1364 KB |
Output is correct |
12 |
Correct |
1 ms |
1236 KB |
Output is correct |
13 |
Correct |
1 ms |
1324 KB |
Output is correct |
14 |
Correct |
7 ms |
6348 KB |
Output is correct |
15 |
Correct |
1 ms |
2132 KB |
Output is correct |
16 |
Correct |
5 ms |
5264 KB |
Output is correct |
17 |
Correct |
1 ms |
1572 KB |
Output is correct |
18 |
Correct |
10 ms |
7592 KB |
Output is correct |
19 |
Correct |
7 ms |
6960 KB |
Output is correct |
20 |
Correct |
7 ms |
7532 KB |
Output is correct |
21 |
Correct |
8 ms |
7632 KB |
Output is correct |
22 |
Correct |
8 ms |
7436 KB |
Output is correct |
23 |
Correct |
7 ms |
7504 KB |
Output is correct |
24 |
Correct |
8 ms |
7760 KB |
Output is correct |
25 |
Correct |
6 ms |
6996 KB |
Output is correct |
26 |
Correct |
9 ms |
7532 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
1328 KB |
Output is correct |
6 |
Correct |
1 ms |
1108 KB |
Output is correct |
7 |
Correct |
1 ms |
1236 KB |
Output is correct |
8 |
Correct |
2 ms |
1324 KB |
Output is correct |
9 |
Correct |
2 ms |
1236 KB |
Output is correct |
10 |
Correct |
1 ms |
1236 KB |
Output is correct |
11 |
Correct |
1 ms |
1364 KB |
Output is correct |
12 |
Correct |
1 ms |
1236 KB |
Output is correct |
13 |
Correct |
1 ms |
1324 KB |
Output is correct |
14 |
Correct |
7 ms |
6348 KB |
Output is correct |
15 |
Correct |
1 ms |
2132 KB |
Output is correct |
16 |
Correct |
5 ms |
5264 KB |
Output is correct |
17 |
Correct |
1 ms |
1572 KB |
Output is correct |
18 |
Correct |
10 ms |
7592 KB |
Output is correct |
19 |
Correct |
7 ms |
6960 KB |
Output is correct |
20 |
Correct |
7 ms |
7532 KB |
Output is correct |
21 |
Correct |
8 ms |
7632 KB |
Output is correct |
22 |
Correct |
8 ms |
7436 KB |
Output is correct |
23 |
Correct |
7 ms |
7504 KB |
Output is correct |
24 |
Correct |
8 ms |
7760 KB |
Output is correct |
25 |
Correct |
6 ms |
6996 KB |
Output is correct |
26 |
Correct |
9 ms |
7532 KB |
Output is correct |
27 |
Correct |
210 ms |
109804 KB |
Output is correct |
28 |
Correct |
6 ms |
10168 KB |
Output is correct |
29 |
Correct |
23 ms |
19224 KB |
Output is correct |
30 |
Correct |
6 ms |
9940 KB |
Output is correct |
31 |
Correct |
177 ms |
87648 KB |
Output is correct |
32 |
Correct |
161 ms |
95016 KB |
Output is correct |
33 |
Correct |
213 ms |
114396 KB |
Output is correct |
34 |
Correct |
178 ms |
107060 KB |
Output is correct |
35 |
Correct |
193 ms |
111444 KB |
Output is correct |
36 |
Correct |
209 ms |
114344 KB |
Output is correct |
37 |
Correct |
212 ms |
116936 KB |
Output is correct |
38 |
Correct |
118 ms |
76244 KB |
Output is correct |
39 |
Correct |
136 ms |
87728 KB |
Output is correct |