oj.uz

Submission #916924

# Submission time Handle Problem Language Result Execution time Memory
916924 2024-01-26T19:15:54 Z NintsiChkhaidze Maxcomp (info1cup18_maxcomp) C++17
15 / 100
 1 ms 2396 KB 
#include <bits/stdc++.h>
#define ll long long
#define s second
#define f first
#define pb push_back
#define pii pair <int,int>
#define left (h<<1),l,(l + r)/2
#define right ((h<<1)|1),(l + r)/2 + 1,r
#define int ll 
using namespace std;

const int N = 1e3 + 3,inf = 1e18;

int a[N][N],n,m,dp[N][N];

void go(){
	for (int i = 0; i <= n + 1; i++)
		for (int j = 0; j <= m + 1; j++){
			if (!i || i > n || !j || j > m) a[i][j] = inf;
			dp[i][j] = inf; 
		}	
}
signed main() {
	ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);

	int ans=0;
	cin>>n>>m;
	for (int i = 1; i <= n; i++){
		for (int j = 1; j <= m; j++){
			cin >> a[i][j];
		}
	}

	go();
	for (int i = 1; i <= n; i++){
		for (int j = m; j >= 1; j--){
			dp[i][j] = min({dp[i][j],a[i - 1][j] + 2,a[i][j + 1] + 2});
			dp[i][j] = min({dp[i][j],dp[i - 1][j] + 1,dp[i][j + 1] + 1});
			ans=max(ans,a[i][j] - dp[i][j]);
		}
	}

	go();
	for (int i = 1; i <= n; i++){
		for (int j = 1; j <= m; j++){
			dp[i][j] = min({dp[i][j],a[i - 1][j] + 2,a[i][j - 1] + 2});
			dp[i][j] = min({dp[i][j],dp[i - 1][j] + 1,dp[i][j - 1] + 1});
			ans=max(ans,a[i][j] - dp[i][j]);
		}
	}

	go();
	for (int i = n; i >= 1; i--){
		for (int j = 1; j <= m; j++){
			dp[i][j] = min({dp[i][j],a[i + 1][j] + 2,a[i][j - 1] + 2});
			dp[i][j] = min({dp[i][j],dp[i + 1][j] + 1,dp[i][j - 1] + 1});
			ans=max(ans,a[i][j] - dp[i][j]);
		}
	}

	go();
	for (int i = n; i >= 1; i--){
		for (int j = m; j >= 1; j--){
			dp[i][j] = min({dp[i][j],a[i + 1][j] + 2,a[i][j + 1] + 2});
			dp[i][j] = min({dp[i][j],dp[i + 1][j] + 1,dp[i][j + 1] + 1});
			ans=max(ans,a[i][j] - dp[i][j]);
		}
	}

	cout<<ans;
}

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Incorrect 1 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Incorrect 1 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Incorrect 1 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -