oj.uz

Submission #685275

# Submission time Handle Problem Language Result Execution time Memory
685275 2023-01-23T20:47:00 Z alexdumitru Maxcomp (info1cup18_maxcomp) C++14
100 / 100
 125 ms 28424 KB 
#include <fstream>
#include <iostream>

using namespace std;

int myMax(int a, int b)
{
    return (a > b ? a : b);
}

int myMax(int a, int b, int c)
{
    return myMax(myMax(a, b), c);
}

const int NMAX = 1000;
const int INF = 2e9;

int n, m;
int a[NMAX + 1][NMAX + 1];
int dp[4][NMAX + 1][NMAX + 1];
int ans = -1;

void solve()
{
    cin >> n >> m;
    for(int i = 1; i <= n; i++)
        for(int j = 1; j <= m; j++)
            cin >> a[i][j];
    for(int k = 0; k <= 3; k++)
    {
        for(int i = 0; i <= n + 1; i++)
            dp[k][i][0] = dp[k][i][m + 1] = -INF;
        for(int j = 1; j <= m; j++)
            dp[k][0][j] = dp[k][n + 1][j] = -INF;
    }
    for(int i = 1; i <= n; i++)
        for(int j = 1; j <= m; j++)
            dp[0][i][j] = myMax(dp[0][i][j - 1], dp[0][i - 1][j], -a[i][j]) - 1;
    for(int i = 1; i <= n; i++)
        for(int j = m; j >= 1; j--)
            dp[1][i][j] = myMax(dp[1][i][j + 1], dp[1][i - 1][j], -a[i][j]) - 1;
    for(int i = n; i >= 1; i--)
        for(int j = 1; j <= m; j++)
            dp[2][i][j] = myMax(dp[2][i][j - 1], dp[2][i + 1][j], -a[i][j]) - 1;
    for(int i = n; i >= 1; i--)
        for(int j = m; j >= 1; j--)
            dp[3][i][j] = myMax(dp[3][i][j + 1], dp[3][i + 1][j], -a[i][j]) - 1;
    for(int i = 1; i <= n; i++)
        for(int j = 1; j <= m; j++)
            if(a[i][j] + myMax(myMax(dp[0][i][j], dp[1][i][j], dp[2][i][j]), dp[3][i][j]) > ans)
                ans = a[i][j] + myMax(myMax(dp[0][i][j], dp[1][i][j], dp[2][i][j]), dp[3][i][j]);
    cout << ans << '\n';
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    solve();
    return 0;
}

Subtask #1
15.0 / 15.0

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

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 1364 KB Output is correct
10 Correct 1 ms 1364 KB Output is correct
11 Correct 1 ms 1348 KB Output is correct
12 Correct 1 ms 1376 KB Output is correct
13 Correct 1 ms 1364 KB Output is correct
14 Correct 1 ms 1364 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 1364 KB Output is correct
13 Correct 1 ms 1364 KB Output is correct
14 Correct 1 ms 1348 KB Output is correct
15 Correct 1 ms 1376 KB Output is correct
16 Correct 1 ms 1364 KB Output is correct
17 Correct 1 ms 1364 KB Output is correct
18 Correct 117 ms 28420 KB Output is correct
19 Correct 121 ms 28424 KB Output is correct
20 Correct 121 ms 28044 KB Output is correct
21 Correct 109 ms 28424 KB Output is correct
22 Correct 111 ms 28424 KB Output is correct
23 Correct 125 ms 28364 KB Output is correct
24 Correct 119 ms 28276 KB Output is correct