oj.uz

Submission #754704

# Submission time Handle Problem Language Result Execution time Memory
754704 2023-06-08T11:53:18 Z Unforgettablepl Collecting Mushrooms (NOI18_collectmushrooms) C++17
100 / 100
 22 ms 13128 KB 
/*
ID: samikgo1
TASK:
LANG: C++
*/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
#define all(x) x.begin(),x.end()
#define allr(x) x.rbegin(),x.rend()
#define f first
#define s second
//#define x first
//#define y second
const int INF = INT32_MAX;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
//    freopen("haybales.in","r",stdin);
//    freopen("haybales.out","w",stdout);
    ll r,c,d,k;
    cin >> r >> c >> d >> k;
    char grid[r+1][c+1];
    vector<vector<ll>> prefix(r+1,vector<ll>(c+1));
    for (int i = 1; i <= r; i++) {
        for (int j = 1; j <= c; j++) {
            prefix[i][j] = prefix[i-1][j] + prefix[i][j-1] - prefix[i-1][j-1];
            cin>>grid[i][j];
            if(grid[i][j]=='S')prefix[i][j]++;
        }
    }
    ll ans = 0;
    for (int i = 1; i <= r; i++) {
        for (int j = 1; j <= c; j++) {
            if(grid[i][j]!='M')continue;
            ll pre = prefix[min(i+d,r)][min(j+d,c)]+prefix[max(i-d-1,(ll)0)][max(j-d-1,(ll)0)] - prefix[max(i-d-1,(ll)0)][min(j+d,c)] - prefix[min(i+d,r)][max(j-d-1,(ll)0)];
            if(pre>=k)ans++;
        }
    }
    cout << ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 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 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 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 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 260 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 320 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 212 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 4 ms 2184 KB Output is correct
2 Correct 5 ms 2260 KB Output is correct
3 Correct 7 ms 2788 KB Output is correct
4 Correct 5 ms 2260 KB Output is correct
5 Correct 7 ms 2476 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 13028 KB Output is correct
2 Correct 16 ms 13128 KB Output is correct
3 Correct 16 ms 13012 KB Output is correct
4 Correct 20 ms 13080 KB Output is correct
5 Correct 22 ms 13024 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 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 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 260 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 4 ms 2184 KB Output is correct
17 Correct 5 ms 2260 KB Output is correct
18 Correct 7 ms 2788 KB Output is correct
19 Correct 5 ms 2260 KB Output is correct
20 Correct 7 ms 2476 KB Output is correct
21 Correct 16 ms 13028 KB Output is correct
22 Correct 16 ms 13128 KB Output is correct
23 Correct 16 ms 13012 KB Output is correct
24 Correct 20 ms 13080 KB Output is correct
25 Correct 22 ms 13024 KB Output is correct
26 Correct 16 ms 5864 KB Output is correct
27 Correct 13 ms 5204 KB Output is correct
28 Correct 13 ms 5356 KB Output is correct
29 Correct 13 ms 5332 KB Output is correct
30 Correct 14 ms 5876 KB Output is correct