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Submission #197513

# Submission time Handle Problem Language Result Execution time Memory
197513 2020-01-21T13:25:32 Z handlename Collecting Mushrooms (NOI18_collectmushrooms) C++17
100 / 100
 29 ms 14828 KB 
#include <bits/stdc++.h>
using namespace std;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int r,c,d,k;
    cin>>r>>c>>d>>k;
    vector<pair<int,int> > mushrooms;
    int arr[r+1][c+1];
    int diff[r+2][c+2];
    memset(arr,0,sizeof(arr));
    memset(diff,0,sizeof(diff));
    for (int i=1;i<=r;i++){
        for (int j=1;j<=c;j++){
            char x;
            cin>>x;
            if (x=='M') mushrooms.push_back(make_pair(i,j));
            else if (x=='S') {
                int a=max(i-d,1);
                int b=max(j-d,1);
                int e=min(i+d,r)+1;
                int f=min(j+d,c)+1;
                diff[a][b]++;
                diff[a][f]--;
                diff[e][b]--;
                diff[e][f]++;
            }
        }
    }
    for (int i=1;i<=r;i++){
        for (int j=1;j<=c;j++){
            arr[i][j]=arr[i][j-1]+arr[i-1][j]-arr[i-1][j-1]+diff[i][j];
        }
    }
    int total=0;
    for (int i=0;i<mushrooms.size();i++){
        int x=mushrooms[i].first;
        int y=mushrooms[i].second;
        if (arr[x][y]>=k) total++;
    }
    cout<<total;
}

Compilation message

mushrooms.cpp: In function 'int main()':
mushrooms.cpp:36:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0;i<mushrooms.size();i++){
                  ~^~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 3 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 376 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 3 ms 632 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 504 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2168 KB Output is correct
2 Correct 7 ms 2168 KB Output is correct
3 Correct 8 ms 2552 KB Output is correct
4 Correct 7 ms 2168 KB Output is correct
5 Correct 8 ms 2320 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 12660 KB Output is correct
2 Correct 29 ms 14828 KB Output is correct
3 Correct 29 ms 14824 KB Output is correct
4 Correct 28 ms 12796 KB Output is correct
5 Correct 29 ms 14824 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 3 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 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 3 ms 632 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 504 KB Output is correct
16 Correct 7 ms 2168 KB Output is correct
17 Correct 7 ms 2168 KB Output is correct
18 Correct 8 ms 2552 KB Output is correct
19 Correct 7 ms 2168 KB Output is correct
20 Correct 8 ms 2320 KB Output is correct
21 Correct 26 ms 12660 KB Output is correct
22 Correct 29 ms 14828 KB Output is correct
23 Correct 29 ms 14824 KB Output is correct
24 Correct 28 ms 12796 KB Output is correct
25 Correct 29 ms 14824 KB Output is correct
26 Correct 19 ms 6000 KB Output is correct
27 Correct 21 ms 6764 KB Output is correct
28 Correct 18 ms 5876 KB Output is correct
29 Correct 19 ms 6000 KB Output is correct
30 Correct 20 ms 7024 KB Output is correct