oj.uz

Submission #535545

# Submission time Handle Problem Language Result Execution time Memory
535545 2022-03-10T13:14:42 Z devariaota Collecting Mushrooms (NOI18_collectmushrooms) C++17
100 / 100
 31 ms 17480 KB 
/*
    Does he have IGM on CF?
    -neko_nyaa
*/
#include <bits/stdc++.h>
using namespace std;

//define
#define PB push_back
#define MP make_pair
#define pi acos(-1)
#define int long long

//constant
const int mod=1e9+7;
const long long MOD=998244353LL;
const long long inf=(long long)1e18;
 
//typedef
typedef long long ll;
typedef pair<int,int> pii;
typedef map<int,int> mii;
typedef map<string,int> msi;
typedef set<int> SI;
typedef priority_queue<int> pqi;

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    //freopen("haybales.in", "r", stdin);
    //freopen("haybales.out", "w", stdout);
    int r,c,d,k;
    cin >> r >> c >> d >> k;
    char s[r+1][c+1];
    for(int i=1;i<=r;i++)
    {
        for(int j=1;j<=c;j++)
        cin >> s[i][j];
    }
    /*for(int i=0;i<r;i++)
    {
        for(int j=0;j<c;j++)
        cout << s[i][j];
        cout << '\n';
    }*/
    int pref[r+1][c+1];
    memset(pref,0,sizeof(pref));
    vector<pii> loc;
    for(int i=1;i<=r;i++)
    {
        for(int j=1;j<=c;j++)
        {
            if(s[i][j]=='M')
            {
                loc.push_back({i,j});
            }
            pref[i][j]=pref[i-1][j]+pref[i][j-1]-pref[i-1][j-1]+(s[i][j]=='S');
        }
    }
    int ans=0;
    //cout << loc.size() << '\n';
    for(auto &[i,j]:loc)
    {
        int minx=max(1LL,i-d);
        int maxx=min(r,i+d);
        int miny=max(1LL,j-d);
        int maxy=min(c,j+d);
        int total=pref[maxx][maxy]-pref[maxx][miny-1]-pref[minx-1][maxy]+pref[minx-1][miny-1];
        ans+=(total>=k);
    }
    cout << ans << '\n';

    return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 340 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 0 ms 212 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 212 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 724 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2004 KB Output is correct
2 Correct 6 ms 2132 KB Output is correct
3 Correct 6 ms 2516 KB Output is correct
4 Correct 4 ms 2048 KB Output is correct
5 Correct 4 ms 2132 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 13320 KB Output is correct
2 Correct 25 ms 17480 KB Output is correct
3 Correct 23 ms 17480 KB Output is correct
4 Correct 17 ms 13388 KB Output is correct
5 Correct 31 ms 17344 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 724 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 5 ms 2004 KB Output is correct
17 Correct 6 ms 2132 KB Output is correct
18 Correct 6 ms 2516 KB Output is correct
19 Correct 4 ms 2048 KB Output is correct
20 Correct 4 ms 2132 KB Output is correct
21 Correct 17 ms 13320 KB Output is correct
22 Correct 25 ms 17480 KB Output is correct
23 Correct 23 ms 17480 KB Output is correct
24 Correct 17 ms 13388 KB Output is correct
25 Correct 31 ms 17344 KB Output is correct
26 Correct 14 ms 6908 KB Output is correct
27 Correct 16 ms 8988 KB Output is correct
28 Correct 14 ms 6864 KB Output is correct
29 Correct 13 ms 6864 KB Output is correct
30 Correct 15 ms 8908 KB Output is correct