oj.uz

Submission #91609

# Submission time Handle Problem Language Result Execution time Memory
91609 2018-12-28T16:22:23 Z model_code Collecting Mushrooms (NOI18_collectmushrooms) C++17
100 / 100
 33 ms 4472 KB 
#include <bits/stdc++.h>
using namespace std;

vector<vector<char> > board;
vector<vector<int> > psum;
int n,m;
int sum(int a,int b){
    if(a<0 || b<0)return 0;
    a=min(a,n-1);b=min(b,m-1);
    return psum[a][b];
}
int sum(int a,int b,int c,int d){
    return sum(c,d)-sum(a-1,d)-sum(c,b-1)+sum(a-1,b-1);
}

int main(){
    //freopen("hi.txt","r",stdin);
    int k,d;
    scanf("%d%d%d%d",&n,&m,&d,&k);
    board.resize(n);
    psum.resize(n);
    for(int i=0;i<n;i++){
        board[i].resize(m);
        psum[i].resize(m);
    }
    char str[500010];
    for(int i=0;i<n;i++){
        scanf("%s",str);
        for(int j=0;j<m;j++){
            board[i][j]=str[j];
            psum[i][j]=sum(i-1,j)+sum(i,j-1)-sum(i-1,j-1);
            psum[i][j]+=board[i][j]=='S';
        }
    }
    int ans=0;
    for(int i=0;i<n;i++){
        for(int j=0;j<m;j++){
            if(board[i][j]=='M'){
                ans+=sum(i-d,j-d,i+d,j+d)>=k;
            }
        }
    }
    printf("%d\n",ans);
}

Compilation message

mushrooms.cpp: In function 'int main()':
mushrooms.cpp:19:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d%d",&n,&m,&d,&k);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
mushrooms.cpp:28:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s",str);
         ~~~~~^~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 420 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 296 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 420 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 296 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1244 KB Output is correct
2 Correct 5 ms 1400 KB Output is correct
3 Correct 6 ms 1528 KB Output is correct
4 Correct 5 ms 1372 KB Output is correct
5 Correct 6 ms 1400 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 3192 KB Output is correct
2 Correct 14 ms 3192 KB Output is correct
3 Correct 14 ms 3192 KB Output is correct
4 Correct 11 ms 3192 KB Output is correct
5 Correct 14 ms 3192 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 420 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 296 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 5 ms 1244 KB Output is correct
17 Correct 5 ms 1400 KB Output is correct
18 Correct 6 ms 1528 KB Output is correct
19 Correct 5 ms 1372 KB Output is correct
20 Correct 6 ms 1400 KB Output is correct
21 Correct 11 ms 3192 KB Output is correct
22 Correct 14 ms 3192 KB Output is correct
23 Correct 14 ms 3192 KB Output is correct
24 Correct 11 ms 3192 KB Output is correct
25 Correct 14 ms 3192 KB Output is correct
26 Correct 18 ms 4472 KB Output is correct
27 Correct 13 ms 2808 KB Output is correct
28 Correct 12 ms 2680 KB Output is correct
29 Correct 11 ms 2808 KB Output is correct
30 Correct 33 ms 3960 KB Output is correct