#include <bits/stdc++.h>
using namespace std;
const int maxn = 3e3+10;
int h, w;
char mat[maxn][maxn];
long long sumO[maxn][maxn], sumI[maxn][maxn];
int main()
{
cin >> h >> w;
for(int i = 1 ; i <= h ; ++i)
for(int j = 1 ; j <= w; ++j)
cin >> mat[i][j];
// make a sum of eche O
for(int i = 1 ; i <= h ; ++i)
{
for(int j = 1 ; j <= w; ++j)
{
sumO[i][j] = sumO[i][j - 1];
if(mat[i][j] == 'O')
sumO[i][j]++;
}
}
for(int i = 1 ; i <= w ; ++i)
{
for(int j = 1 ; j <= h; ++j)
{
sumI[j][i] = sumI[j - 1][i];
if(mat[j][i] == 'I')
sumI[j][i]++;
}
}
long long resp = 0;
for(int i = 1 ; i <= h ; ++i)
{
for(int j = 1 ; j <= w; ++j)
{
if(mat[i][j] == 'J')
{
long long O = sumO[i][w] - sumO[i][j];
long long I = sumI[h][j] - sumI[i - 1][j];
//cout << i << " " << j << " " << O << " " << I << "\n" ;
resp += (O*I);
}
}
}
cout << resp << "\n";
/*for(int i = 1 ; i <= h ; ++i)
{
for(int j = 1 ; j <= w; ++j)
{
cout << sumO[i][j] <<" ";
}
cout << "\n";
}
cout << "\n";
for(int i = 1 ; i <= h ; ++i)
{
for(int j = 1 ; j <= w; ++j)
{
cout << sumI[i][j] <<" ";
}
cout << "\n";
}*/
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
3 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
3 ms |
1536 KB |
Output is correct |
6 |
Correct |
4 ms |
1536 KB |
Output is correct |
7 |
Correct |
4 ms |
1536 KB |
Output is correct |
8 |
Correct |
4 ms |
1664 KB |
Output is correct |
9 |
Correct |
4 ms |
1664 KB |
Output is correct |
10 |
Correct |
3 ms |
1536 KB |
Output is correct |
11 |
Correct |
4 ms |
1664 KB |
Output is correct |
12 |
Correct |
3 ms |
1536 KB |
Output is correct |
13 |
Correct |
3 ms |
1536 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
3 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
3 ms |
1536 KB |
Output is correct |
6 |
Correct |
4 ms |
1536 KB |
Output is correct |
7 |
Correct |
4 ms |
1536 KB |
Output is correct |
8 |
Correct |
4 ms |
1664 KB |
Output is correct |
9 |
Correct |
4 ms |
1664 KB |
Output is correct |
10 |
Correct |
3 ms |
1536 KB |
Output is correct |
11 |
Correct |
4 ms |
1664 KB |
Output is correct |
12 |
Correct |
3 ms |
1536 KB |
Output is correct |
13 |
Correct |
3 ms |
1536 KB |
Output is correct |
14 |
Correct |
27 ms |
8912 KB |
Output is correct |
15 |
Correct |
7 ms |
5120 KB |
Output is correct |
16 |
Correct |
14 ms |
5248 KB |
Output is correct |
17 |
Correct |
3 ms |
512 KB |
Output is correct |
18 |
Correct |
30 ms |
9796 KB |
Output is correct |
19 |
Correct |
32 ms |
9592 KB |
Output is correct |
20 |
Correct |
26 ms |
9592 KB |
Output is correct |
21 |
Correct |
27 ms |
10104 KB |
Output is correct |
22 |
Correct |
76 ms |
9720 KB |
Output is correct |
23 |
Correct |
24 ms |
9720 KB |
Output is correct |
24 |
Correct |
28 ms |
9976 KB |
Output is correct |
25 |
Correct |
28 ms |
9720 KB |
Output is correct |
26 |
Correct |
33 ms |
9848 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
384 KB |
Output is correct |
2 |
Correct |
2 ms |
384 KB |
Output is correct |
3 |
Correct |
3 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
3 ms |
1536 KB |
Output is correct |
6 |
Correct |
4 ms |
1536 KB |
Output is correct |
7 |
Correct |
4 ms |
1536 KB |
Output is correct |
8 |
Correct |
4 ms |
1664 KB |
Output is correct |
9 |
Correct |
4 ms |
1664 KB |
Output is correct |
10 |
Correct |
3 ms |
1536 KB |
Output is correct |
11 |
Correct |
4 ms |
1664 KB |
Output is correct |
12 |
Correct |
3 ms |
1536 KB |
Output is correct |
13 |
Correct |
3 ms |
1536 KB |
Output is correct |
14 |
Correct |
27 ms |
8912 KB |
Output is correct |
15 |
Correct |
7 ms |
5120 KB |
Output is correct |
16 |
Correct |
14 ms |
5248 KB |
Output is correct |
17 |
Correct |
3 ms |
512 KB |
Output is correct |
18 |
Correct |
30 ms |
9796 KB |
Output is correct |
19 |
Correct |
32 ms |
9592 KB |
Output is correct |
20 |
Correct |
26 ms |
9592 KB |
Output is correct |
21 |
Correct |
27 ms |
10104 KB |
Output is correct |
22 |
Correct |
76 ms |
9720 KB |
Output is correct |
23 |
Correct |
24 ms |
9720 KB |
Output is correct |
24 |
Correct |
28 ms |
9976 KB |
Output is correct |
25 |
Correct |
28 ms |
9720 KB |
Output is correct |
26 |
Correct |
33 ms |
9848 KB |
Output is correct |
27 |
Correct |
949 ms |
151296 KB |
Output is correct |
28 |
Correct |
26 ms |
26360 KB |
Output is correct |
29 |
Correct |
66 ms |
13816 KB |
Output is correct |
30 |
Correct |
5 ms |
740 KB |
Output is correct |
31 |
Correct |
695 ms |
126296 KB |
Output is correct |
32 |
Correct |
900 ms |
151272 KB |
Output is correct |
33 |
Correct |
943 ms |
150520 KB |
Output is correct |
34 |
Correct |
827 ms |
146160 KB |
Output is correct |
35 |
Correct |
966 ms |
151160 KB |
Output is correct |
36 |
Correct |
841 ms |
150560 KB |
Output is correct |
37 |
Correct |
952 ms |
151032 KB |
Output is correct |
38 |
Correct |
621 ms |
125440 KB |
Output is correct |
39 |
Correct |
626 ms |
125688 KB |
Output is correct |