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Submission #534649

# Submission time Handle Problem Language Result Execution time Memory
534649 2022-03-08T12:41:52 Z devariaota Collecting Mushrooms (NOI18_collectmushrooms) C++17
100 / 100
 28 ms 24284 KB 
#include <bits/stdc++.h>
using namespace std;
int r,c,d,k;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> r >> c >> d >> k;
    int arr[r+5][c+5];
    int pref[r+5][c+5];
    memset(arr,0,sizeof(arr));
    memset(pref,0,sizeof(pref));
    for(int i=1;i<=r;i++){
        for(int j=1;j<=c;j++){
            char x;
            cin >> x;
            if(x == '.') arr[i][j] = 0;
            else if(x == 'M') arr[i][j] = 1;
            else arr[i][j] = 2;
        }
    }
    for(int i=1;i<=r;i++){
        for(int j=1;j<=c;j++){
            if(arr[i][j] == 2){
                pref[max(i-d,1)][max(j-d,1)]++;
                pref[max(i-d,1)][min(j+d+1,c+1)]--;
                pref[min((i+d+1),r+1)][max(j-d,1)]--;
                pref[min((i+d+1),r+1)][min(j+d+1,c+1)]++;
            }
        }
    }
    for(int i=1;i<=r;i++){
        for(int j=1;j<=c;j++){
            pref[i][j]+=pref[i-1][j]+pref[i][j-1]-pref[i-1][j-1];
        }
    }
    int ans=0;
    for(int i=1;i<=r;i++){
        for(int j=1;j<=c;j++){
        //  cout<<pref[i][j]<<" ";
        ans+=(pref[i][j]>=k&&arr[i][j]==1);
        }
        // cout<<endl;
    }
    cout << ans << endl;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 0 ms 308 KB Output is correct
10 Correct 1 ms 204 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1996 KB Output is correct
2 Correct 5 ms 2116 KB Output is correct
3 Correct 9 ms 2552 KB Output is correct
4 Correct 7 ms 2124 KB Output is correct
5 Correct 5 ms 2252 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 24268 KB Output is correct
2 Correct 22 ms 24152 KB Output is correct
3 Correct 23 ms 24284 KB Output is correct
4 Correct 27 ms 24188 KB Output is correct
5 Correct 24 ms 24208 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 0 ms 308 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 5 ms 1996 KB Output is correct
17 Correct 5 ms 2116 KB Output is correct
18 Correct 9 ms 2552 KB Output is correct
19 Correct 7 ms 2124 KB Output is correct
20 Correct 5 ms 2252 KB Output is correct
21 Correct 28 ms 24268 KB Output is correct
22 Correct 22 ms 24152 KB Output is correct
23 Correct 23 ms 24284 KB Output is correct
24 Correct 27 ms 24188 KB Output is correct
25 Correct 24 ms 24208 KB Output is correct
26 Correct 18 ms 5448 KB Output is correct
27 Correct 16 ms 4672 KB Output is correct
28 Correct 15 ms 5068 KB Output is correct
29 Correct 15 ms 5108 KB Output is correct
30 Correct 14 ms 5236 KB Output is correct