oj.uz

Submission #146971

# Submission time Handle Problem Language Result Execution time Memory
146971 2019-08-27T01:55:30 Z dongwon0427 Collecting Mushrooms (NOI18_collectmushrooms) C++14
100 / 100
 52 ms 35928 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;


int n,m,d,k;
vector<int> A[500005], S[500005];
char tmp[500005];
vector<pii> mush;

int cnt(int x1,int y1,int x2,int y2) {
    x2 = min(x2, n);
    y2 = min(y2, m);

    x1--; y1--;
    x1 = max(0, x1);
    y1 = max(0, y1);

    return S[x2][y2] - S[x1][y2] - S[x2][y1] + S[x1][y1];
}
int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>n>>m>>d>>k;

    for(int j=1;j<=n;j++) {
        cin>>tmp;
        int len = strlen(tmp);
        A[j].push_back(0);
        for(int i=0;i<len;i++) {
            A[j].push_back(0);
            if(tmp[i] == 'S') A[j].back() = 1;
            if(tmp[i] == 'M') {
                mush.push_back(pii(j,i+1));
            }
        }
    }

    for(int j=0;j<=m;j++) S[0].push_back(0);
    for(int i=1;i<=n;i++) {
        S[i].push_back(0);
        for(int j=1;j<=m;j++) {
            S[i].push_back(0);
            S[i][j] = A[i][j] + S[i-1][j] + S[i][j-1] - S[i-1][j-1];
        }
    }

    for(int i=1;i<=n;i++) {
        for(int j=1;j<=m;j++) {
            //cout<<S[i][j]<<' ';
        }
       // cout<<'\n';
    }
    //cout<<'\n';

    int ans = 0;
    for(pii p : mush) {
        //cout<<p.first<<' '<<p.second<<' '<<cnt(p.first - d, p.second - d, p.first + d, p.second + d)<<'\n';
        ans += (cnt(p.first - d, p.second - d, p.first + d, p.second + d) >= k);
    }
    cout<<ans;
    return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23800 KB Output is correct
2 Correct 22 ms 23928 KB Output is correct
3 Correct 23 ms 23928 KB Output is correct
4 Correct 22 ms 23928 KB Output is correct
5 Correct 22 ms 23932 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23800 KB Output is correct
2 Correct 22 ms 23928 KB Output is correct
3 Correct 23 ms 23928 KB Output is correct
4 Correct 22 ms 23928 KB Output is correct
5 Correct 22 ms 23932 KB Output is correct
6 Correct 22 ms 23800 KB Output is correct
7 Correct 22 ms 23800 KB Output is correct
8 Correct 23 ms 23928 KB Output is correct
9 Correct 23 ms 23928 KB Output is correct
10 Correct 22 ms 23800 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23928 KB Output is correct
2 Correct 22 ms 23932 KB Output is correct
3 Correct 22 ms 24056 KB Output is correct
4 Correct 22 ms 23800 KB Output is correct
5 Correct 24 ms 23928 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 25620 KB Output is correct
2 Correct 28 ms 25720 KB Output is correct
3 Correct 29 ms 25852 KB Output is correct
4 Correct 29 ms 25464 KB Output is correct
5 Correct 30 ms 25848 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 32568 KB Output is correct
2 Correct 48 ms 35928 KB Output is correct
3 Correct 47 ms 35016 KB Output is correct
4 Correct 45 ms 32896 KB Output is correct
5 Correct 49 ms 35536 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23800 KB Output is correct
2 Correct 22 ms 23928 KB Output is correct
3 Correct 23 ms 23928 KB Output is correct
4 Correct 22 ms 23928 KB Output is correct
5 Correct 22 ms 23932 KB Output is correct
6 Correct 22 ms 23800 KB Output is correct
7 Correct 22 ms 23800 KB Output is correct
8 Correct 23 ms 23928 KB Output is correct
9 Correct 23 ms 23928 KB Output is correct
10 Correct 22 ms 23800 KB Output is correct
11 Correct 23 ms 23928 KB Output is correct
12 Correct 22 ms 23932 KB Output is correct
13 Correct 22 ms 24056 KB Output is correct
14 Correct 22 ms 23800 KB Output is correct
15 Correct 24 ms 23928 KB Output is correct
16 Correct 29 ms 25620 KB Output is correct
17 Correct 28 ms 25720 KB Output is correct
18 Correct 29 ms 25852 KB Output is correct
19 Correct 29 ms 25464 KB Output is correct
20 Correct 30 ms 25848 KB Output is correct
21 Correct 45 ms 32568 KB Output is correct
22 Correct 48 ms 35928 KB Output is correct
23 Correct 47 ms 35016 KB Output is correct
24 Correct 45 ms 32896 KB Output is correct
25 Correct 49 ms 35536 KB Output is correct
26 Correct 52 ms 31592 KB Output is correct
27 Correct 39 ms 31324 KB Output is correct
28 Correct 37 ms 28908 KB Output is correct
29 Correct 36 ms 28880 KB Output is correct
30 Correct 48 ms 29508 KB Output is correct