oj.uz

Submission #776212

# Submission time Handle Problem Language Result Execution time Memory
776212 2023-07-07T12:54:26 Z DobromirAngelov Bitaro the Brave (JOI19_ho_t1) C++14
100 / 100
 245 ms 89488 KB 
#include<bits/stdc++.h>
#define endl '\n'

using namespace std;

const int MAXN=3005;

int n,m;
string s[MAXN];
int pref[2][MAXN][MAXN];

int main()
{
ios::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);

cin>>n>>m;
for(int i=0;i<n;i++)
{
    cin>>s[i];
}

for(int i=0;i<n;i++)
{
    for(int j=0;j<m;j++)
    {
        if(j>0) pref[0][i][j]=pref[0][i][j-1];
        if(s[i][j]=='O') pref[0][i][j]++;
    }
}

for(int j=0;j<m;j++)
{
    for(int i=0;i<n;i++)
    {
        if(i>0) pref[1][i][j]=pref[1][i-1][j];
        if(s[i][j]=='I') pref[1][i][j]++;
    }
}

long long ans=0;
for(int i=0;i<n;i++)
{
    for(int j=0;j<m;j++)
    {
        if(s[i][j]=='J') ans+=(pref[0][i][m-1]-(j>0 ? pref[0][i][j-1] : 0)) * (pref[1][n-1][j]-(i>0 ? pref[1][i-1][j] : 0));
    }
}

cout<<ans<<endl;

return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory 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 416 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 1 ms 1108 KB Output is correct
8 Correct 1 ms 1236 KB Output is correct
9 Correct 1 ms 1236 KB Output is correct
10 Correct 1 ms 1108 KB Output is correct
11 Correct 1 ms 1236 KB Output is correct
12 Correct 1 ms 1236 KB Output is correct
13 Correct 1 ms 1108 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory 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 416 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 1 ms 1108 KB Output is correct
8 Correct 1 ms 1236 KB Output is correct
9 Correct 1 ms 1236 KB Output is correct
10 Correct 1 ms 1108 KB Output is correct
11 Correct 1 ms 1236 KB Output is correct
12 Correct 1 ms 1236 KB Output is correct
13 Correct 1 ms 1108 KB Output is correct
14 Correct 7 ms 6352 KB Output is correct
15 Correct 2 ms 3796 KB Output is correct
16 Correct 3 ms 3684 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 6 ms 6784 KB Output is correct
19 Correct 5 ms 6740 KB Output is correct
20 Correct 5 ms 6640 KB Output is correct
21 Correct 6 ms 6868 KB Output is correct
22 Correct 5 ms 6740 KB Output is correct
23 Correct 5 ms 6680 KB Output is correct
24 Correct 6 ms 6836 KB Output is correct
25 Correct 5 ms 6712 KB Output is correct
26 Correct 5 ms 6700 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory 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 416 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 1 ms 1108 KB Output is correct
8 Correct 1 ms 1236 KB Output is correct
9 Correct 1 ms 1236 KB Output is correct
10 Correct 1 ms 1108 KB Output is correct
11 Correct 1 ms 1236 KB Output is correct
12 Correct 1 ms 1236 KB Output is correct
13 Correct 1 ms 1108 KB Output is correct
14 Correct 7 ms 6352 KB Output is correct
15 Correct 2 ms 3796 KB Output is correct
16 Correct 3 ms 3684 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 6 ms 6784 KB Output is correct
19 Correct 5 ms 6740 KB Output is correct
20 Correct 5 ms 6640 KB Output is correct
21 Correct 6 ms 6868 KB Output is correct
22 Correct 5 ms 6740 KB Output is correct
23 Correct 5 ms 6680 KB Output is correct
24 Correct 6 ms 6836 KB Output is correct
25 Correct 5 ms 6712 KB Output is correct
26 Correct 5 ms 6700 KB Output is correct
27 Correct 229 ms 88476 KB Output is correct
28 Correct 9 ms 19284 KB Output is correct
29 Correct 8 ms 7812 KB Output is correct
30 Correct 1 ms 692 KB Output is correct
31 Correct 177 ms 71956 KB Output is correct
32 Correct 215 ms 89264 KB Output is correct
33 Correct 203 ms 89184 KB Output is correct
34 Correct 185 ms 83376 KB Output is correct
35 Correct 210 ms 89324 KB Output is correct
36 Correct 204 ms 89128 KB Output is correct
37 Correct 245 ms 89488 KB Output is correct
38 Correct 150 ms 71868 KB Output is correct
39 Correct 131 ms 71552 KB Output is correct