oj.uz

Submission #921875

# Submission time Handle Problem Language Result Execution time Memory
921875 2024-02-04T12:41:32 Z vjudge1 Collecting Mushrooms (NOI18_collectmushrooms) C++17
100 / 100
 12 ms 9252 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
using namespace std;

void solve(){
    ll a,b,d,k;
    cin>>a>>b>>d>>k;
    char c[a+1][b+1];
    ll pr[a+1][b+1];
    for(ll i=1;i<=a;i++){
        for(ll j=1;j<=b;j++){
            cin>>c[i][j];
            pr[i][j]=(c[i][j]=='S')+pr[i-1][j]+pr[i][j-1]-pr[i-1][j-1];
        }
    }
    ll ans=0;
    for(ll i=1;i<=a;i++){
        for(ll j=1;j<=b;j++){
            if(c[i][j]=='M'){
                ll l1=0,r1=0,l2=0,r2=0;
                l1=max(1ll,i-d);
                r1=max(1ll,j-d);
                l2=min(a,i+d);
                r2=min(b,j+d);
                ll count=pr[l2][r2]-pr[l2][r1-1]-pr[l1-1][r2]+pr[l1-1][r1-1];
                if(count>=k){
                    ans++;
                }
            }
        }
    }
    cout<<ans;
}

int main()
{
    ios_base::sync_with_stdio(0),cin.tie(0);
    ll t=1,i=1;
    //cin>>t;
    while(t--){
        //cout<<"Case ";
        //cout<<i<<':'<<"\n";
        //i++;
        solve();
    }
    return 0;
}

Compilation message

mushrooms.cpp: In function 'int main()':
mushrooms.cpp:39:12: warning: unused variable 'i' [-Wunused-variable]
   39 |     ll t=1,i=1;
      |            ^

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 404 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 396 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2136 KB Output is correct
2 Correct 3 ms 2140 KB Output is correct
3 Correct 4 ms 2652 KB Output is correct
4 Correct 3 ms 2140 KB Output is correct
5 Correct 4 ms 2140 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9052 KB Output is correct
2 Correct 11 ms 9084 KB Output is correct
3 Correct 12 ms 9252 KB Output is correct
4 Correct 12 ms 9052 KB Output is correct
5 Correct 11 ms 9052 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 404 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 396 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 2136 KB Output is correct
17 Correct 3 ms 2140 KB Output is correct
18 Correct 4 ms 2652 KB Output is correct
19 Correct 3 ms 2140 KB Output is correct
20 Correct 4 ms 2140 KB Output is correct
21 Correct 11 ms 9052 KB Output is correct
22 Correct 11 ms 9084 KB Output is correct
23 Correct 12 ms 9252 KB Output is correct
24 Correct 12 ms 9052 KB Output is correct
25 Correct 11 ms 9052 KB Output is correct
26 Correct 9 ms 4700 KB Output is correct
27 Correct 10 ms 4872 KB Output is correct
28 Correct 9 ms 4696 KB Output is correct
29 Correct 10 ms 4700 KB Output is correct
30 Correct 9 ms 4696 KB Output is correct