Submission #464099

#	Time	Username	Problem	Language	Result	Execution time	Memory
464099		CyberCow	T-Covering (eJOI19_covering)	C++17	0 / 100	2 ms	716 KiB

covering

#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <set>
#include <string>
#include <cmath>
#include <map>
#include <unordered_map>
#include <fstream>
#include <iomanip>
#include <iterator>
#include <stack>
using namespace std;
using ll = long long;
int v[1002][1002];
int a[1002][1002];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n, m, i, j, x, y, k, asn;
    ll ans = 0;
    cin >> n >> m;
    for ( i = 1; i <= n; i++)
    {
        for ( j = 1; j <= m; j++)
        {
            cin >> v[i][j];
        }
    }
    cin >> k;
    for ( i = 0; i < k; i++)
    {
        cin >> x >> y;
        a[x][y] = 1;
    }
    if (a[1][1] == 1 || a[1][m] == 1 || a[n][1] == 1 || a[n][m] == 1)
    {
        cout << "No";
        exit(0);
    }
    for ( i = 1; i <= n; i++)
    {
        for ( j = 1; j < m; j++)
        {
            if (a[i][j] == 1 && a[i - 1][j] == 1)
            {
                if (i + 1 <= n && i - 2 >= 1 && j > 1 && j < m)
                {
                    ans += a[i][j] + a[i][j + 1] + a[i][j - 1] + a[i + 1][j];
                }
                else
                {
                    cout << "No";
                    exit(0);
                }
            }
            else if (a[i][j] == 1 && a[i + 1][j] == 1)
            {
                if (i + 2 <= n && i - 1 >= 1 && j > 1 && j < m)
                {
                    ans += a[i][j] + a[i][j + 1] + a[i][j - 1] + a[i - 1][j];
                }
                else
                {
                    cout << "No";
                    exit(0);
                }
            }
            else if (a[i][j] == 1 && a[i][j + 1] == 1)
            {
                if (i + 1 <= n && i - 1 >= 1 && j - 1 >= 1 && j + 2 <= m)
                {
                    ans += a[i][j] + a[i][j - 1] + a[i + 1][j] + a[i - 1][j];
                }
                else
                {
                    cout << "No";
                    exit(0);
                }
            }
            else if (a[i][j] == 1 && a[i][j - 1] == 1)
            {
                if (i + 1 <= n && i - 1 >= 1 && j - 2 >= 1 && j + 1 <= m)
                {
                    ans += a[i][j] + a[i][j + 1] + a[i + 1][j] + a[i - 1][j];
                }
                else
                {
                    cout << "No";
                    exit(0);
                }
            }
            else
            {
                ans += a[i][j] + a[i][j + 1] + a[i + 1][j] + a[i - 1][j] + a[i][j - 1] - min(min(a[i][j - 1], a[i - 1][j]), min(a[i][j + 1], a[i + 1][j]));
            }
        }
    }
    return 0;
}

Compilation message (stderr)

covering.cpp: In function 'int main()':
covering.cpp:23:30: warning: unused variable 'asn' [-Wunused-variable]
   23 |     int n, m, i, j, x, y, k, asn;
      |                              ^~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 30