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Submission #1106693

# Submission time Handle Problem Language Result Execution time Memory
1106693 2024-10-30T21:50:29 Z vjudge1 Collecting Mushrooms (NOI18_collectmushrooms) C++17
60 / 100
 84 ms 262144 KB 
#include <bits/stdc++.h>
#define sts(v) stable_sort(v.BE, v.E)
#define Rsts(v) stable_sort(v.rBE, v.rE)
#define rev(v) reverse(v.BE, v.E)
#define BE begin()
#define rBE rbegin()
#define E end()
#define rE rend()
#define pb push_back
#define ppb pop_back()
#define pf push_front
#define ppf pop_front()
#define F first
#define S second

using namespace std;
using ll = long long;

const int MAXN = 1e5 + 1;
const int MOD = 1e9 + 7;

int n, m, D, K;
pair<int, int> new_cord(int a, int b){
    if(a < 1 or a > n + D or b < 1 or b > m + D)return {0, 0};
    else return {a, b};
}

int main(){
    ios_base::sync_with_stdio(0); 
    cin.tie(0); cout.tie(0);

    cin >> n >> m >> D >> K;
    vector<pair<int,int>> mushroom;
    vector<vector<int>> v(n + D + 10, vector<int> (m + D + 10)), ta(n + D + 10, vector<int> (m + D + 10));

    for(int i = 1; i <= n; i++)
        for(int j = 1; j <= m; j++){
            char c; cin >> c;

            if(c == 'S')v[i][j] = 1;
            else if(c == 'M')mushroom.pb({i, j});
        }

    for(int i = 1; i <= n + D; i++)
        for(int j = 1; j <= m + D; j++)
            ta[i][j] = ta[i - 1][j] + ta[i][j - 1] - ta[i - 1][j - 1] + v[i][j];
    
    int cnt = 0;
    for(auto &i : mushroom){
        pair<int, int>  cor1 = new_cord(i.F + D, i.S + D), cor2 = new_cord(i.F - D - 1, i.S - D - 1),
                        cor3 = new_cord(i.F + D, i.S - D - 1), cor4 = new_cord(i.F - D - 1, i.S + D);
        
        if(K <= ta[cor1.F][cor1.S] + ta[cor2.F][cor2.S] - ta[cor3.F][cor3.S] - ta[cor4.F][cor4.S])cnt++;
    }

    cout << cnt << '\n';

    return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 848 KB Output is correct
3 Correct 2 ms 848 KB Output is correct
4 Correct 1 ms 592 KB Output is correct
5 Correct 1 ms 592 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 848 KB Output is correct
3 Correct 2 ms 848 KB Output is correct
4 Correct 1 ms 592 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 1 ms 756 KB Output is correct
7 Correct 1 ms 592 KB Output is correct
8 Correct 1 ms 848 KB Output is correct
9 Correct 1 ms 592 KB Output is correct
10 Correct 1 ms 336 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 592 KB Output is correct
4 Correct 1 ms 504 KB Output is correct
5 Correct 1 ms 592 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 6136 KB Output is correct
2 Correct 5 ms 4088 KB Output is correct
3 Correct 4 ms 3152 KB Output is correct
4 Correct 6 ms 5456 KB Output is correct
5 Correct 4 ms 2600 KB Output is correct

Subtask #5
0 / 19.0

# Verdict Execution time Memory Grader output
1 Runtime error 84 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #6
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 848 KB Output is correct
3 Correct 2 ms 848 KB Output is correct
4 Correct 1 ms 592 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 1 ms 756 KB Output is correct
7 Correct 1 ms 592 KB Output is correct
8 Correct 1 ms 848 KB Output is correct
9 Correct 1 ms 592 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 592 KB Output is correct
14 Correct 1 ms 504 KB Output is correct
15 Correct 1 ms 592 KB Output is correct
16 Correct 6 ms 6136 KB Output is correct
17 Correct 5 ms 4088 KB Output is correct
18 Correct 4 ms 3152 KB Output is correct
19 Correct 6 ms 5456 KB Output is correct
20 Correct 4 ms 2600 KB Output is correct
21 Runtime error 84 ms 262144 KB Execution killed with signal 9
22 Halted 0 ms 0 KB -