Submission #677452

#	Time	Username	Problem	Language	Result	Execution time	Memory
677452		LucaLucaM	Maxcomp (info1cup18_maxcomp)	C++17	15 / 100	4 ms	4180 KiB

maxcomp

#include <bits/stdc++.h>

using namespace std;

int a[1001][1001];
int dp[1001][1001]; /// dp[n][m] = minim - d pana la (n, m) (dp[n][m] = minim)

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

    int n, m;
    cin >> n >> m;

    for (int i=1; i<=n; i++)
    {
        for (int j=1; j<=m; j++)
            cin >> a[i][j];
    }

    int ans = -1;

    for (int rep=0; rep<4; rep++)
    {
        for (int i=1; i<=n; i++)
        {
            for (int j=1; j<=m; j++)
            {
                dp[i][j] = a[i][j] + 1;

                if (i > 1)
                {
                    dp[i][j] = min(dp[i][j], dp[i-1][j]+1);
                    dp[i][j] = min(dp[i][j], a[i-1][j] +2);
                }
                if (j > 1)
                {
                    dp[i][j] = min(dp[i][j], dp[i][j-1]+1);
                    dp[i][j] = min(dp[i][j], a[i][j-1]+2);
                }

                ans = max(ans, a[i][j] - dp[i][j]);
            }
        }

        /// rotate matrix a

        for (int i=1; i<=n; i++)
        {
            reverse(a+1, a+m+1);
        }

        for (int i=1; i<=n; i++)
        {
            for (int j=i; j<=m; j++)
                swap(a[i][j], a[j][i]);
        }
    }

    cout << ans;

    return 0;
}

• Subtask 1: 0 / 15
• Subtask 2: 15 / 15
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40