Submission #830384

#	Time	Username	Problem	Language	Result	Execution time	Memory
830384		ajay	Collecting Mushrooms (NOI18_collectmushrooms)	C++14	60 / 100	2049 ms	17736 KiB

mushrooms

/* Ajay Jadhav */

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <deque>
#include <vector>
#include <cstdlib>
#include <iomanip>
#include <cmath>
#include <queue>
#include <map>
#include <set>
#include <stack>
#include <ctime>
#include <string.h>
#include <climits>
#include <cstring>
using namespace std;

#define ll long long
#define pb push_back
#define pii pair<int, int>
#define vi vector<int>
#define vvi vector<vi>
#define vii vector<pii>
#define mi map<int, int>
#define mii map<pii, int>
#define all(a) (a).begin(), (a).end()
#define x first
#define y second
#define sz(x) (int)x.size()
#define hell 1000000007
#define rep(i, a, b) for (int i = a; i < b; i++)
#define endl '\n'

void solve()
{
    int r, c, d, k;
    cin >> r >> c >> d >> k;
    int dx[8] = {1, 0, -1, 0, 1, -1, 1, -1};
    int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};
    vector<string> field(r);
    vvi mat(r, vi(c));
    vvi mushrooms, sprinkler;
    rep(i, 0, r)
    {
        cin >> field[i];
        rep(j, 0, c)
        {
            if (field[i][j] == 'M')
                mushrooms.pb({i, j});
            else if (field[i][j] == 'S')
                sprinkler.pb({i, j});
        }
    }

    int ans = 0;
    rep(i, 0, sz(mushrooms))
    {
        int cnt = 0;
        rep(j, 0, sz(sprinkler))
        {
            int dis = max(abs(mushrooms[i][0] - sprinkler[j][0]), abs(mushrooms[i][1] - sprinkler[j][1]));
            if (dis <= d)
            {
                cnt++;
            }
        }

        if (cnt >= k)
            ans++;
    }

    cout << ans << endl;
}

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int t = 1;
    // cin>>t;
    while (t--)
    {
        solve();
    }
    return 0;
}

Compilation message (stderr)

mushrooms.cpp: In function 'void solve()':
mushrooms.cpp:42:9: warning: unused variable 'dx' [-Wunused-variable]
   42 |     int dx[8] = {1, 0, -1, 0, 1, -1, 1, -1};
      |         ^~
mushrooms.cpp:43:9: warning: unused variable 'dy' [-Wunused-variable]
   43 |     int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};
      |         ^~

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 18 / 18
• Subtask 4: 23 / 23
• Subtask 5: 0 / 19
• Subtask 6: 0 / 21