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Submission #359336

# Submission time Handle Problem Language Result Execution time Memory
359336 2021-01-26T20:41:13 Z ogibogi2004 Maxcomp (info1cup18_maxcomp) C++14
100 / 100
 431 ms 50028 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const ll MAXN=1024;
const ll INF=2e15;
ll a[MAXN][MAXN];
ll opt1[MAXN][MAXN];
ll opt2[MAXN][MAXN];
ll opt3[MAXN][MAXN];
ll opt4[MAXN][MAXN];
int main()
{
	ll n,m;
	cin>>n>>m;
	for(ll i=1;i<=n;i++)
	{
		for(ll j=1;j<=m;j++)
		{
			cin>>a[i][j];
		}
	}
	for(ll i=0;i<MAXN;i++)
	{
		for(ll j=0;j<MAXN;j++)
		{
			opt1[i][j]=-INF;
			opt2[i][j]=-INF;
			opt3[i][j]=-INF;
			opt4[i][j]=-INF;
		}
	}
	for(ll i=n;i>0;i--)
	{
		for(ll j=m;j>0;j--)
		{
			opt1[i][j]=max(opt1[i][j+1],opt1[i+1][j]);
			opt1[i][j]=max(opt1[i][j],-a[i][j]-i-j);
		}
	}
	for(ll i=n;i>0;i--)
	{
		for(ll j=1;j<=m;j++)
		{
			opt2[i][j]=max(opt2[i][j-1],opt2[i+1][j]);
			opt2[i][j]=max(opt2[i][j],-a[i][j]-i+j);
		}
	}
	for(ll i=1;i<=n;i++)
	{
		for(ll j=m;j>0;j--)
		{
			opt3[i][j]=max(opt3[i][j+1],opt3[i-1][j]);
			opt3[i][j]=max(opt3[i][j],-a[i][j]+i-j);
		}
	}
	
	for(ll i=1;i<=n;i++)
	{
		for(ll j=1;j<=m;j++)
		{
			opt4[i][j]=max(opt4[i][j-1],opt4[i-1][j]);
			opt4[i][j]=max(opt4[i][j],-a[i][j]+i+j);
		}
	}
	ll ans=-INF;
	for(ll i=1;i<=n;i++)
	{
		for(ll j=1;j<=m;j++)
		{
			/*cout<<i<<" "<<j<<":\n";
			cout<<opt1[i][j]<<" "<<opt2[i][j]<<" "<<opt3[i][j]<<" "<<opt4[i][j]<<endl;
			cout<<a[i][j]+i+j+opt1[i][j]<<endl;
			cout<<a[i][j]+i-j+opt2[i][j]<<endl;
			cout<<a[i][j]-i+j+opt3[i][j]<<endl;
			cout<<a[i][j]-i-j+opt4[i][j]<<endl;*/
			ans=max(ans,a[i][j]+i+j+opt1[i][j]);
			ans=max(ans,a[i][j]+i-j+opt2[i][j]);
			ans=max(ans,a[i][j]-i+j+opt3[i][j]);
			ans=max(ans,a[i][j]-i-j+opt4[i][j]);
		}
	}
	cout<<ans-1<<endl;
return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 33132 KB Output is correct
2 Correct 20 ms 33132 KB Output is correct
3 Correct 20 ms 33132 KB Output is correct
4 Correct 20 ms 33132 KB Output is correct
5 Correct 21 ms 33132 KB Output is correct
6 Correct 20 ms 33260 KB Output is correct
7 Correct 20 ms 33132 KB Output is correct
8 Correct 20 ms 33132 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 33132 KB Output is correct
2 Correct 20 ms 33132 KB Output is correct
3 Correct 20 ms 33132 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 33132 KB Output is correct
2 Correct 20 ms 33132 KB Output is correct
3 Correct 20 ms 33132 KB Output is correct
4 Correct 20 ms 33132 KB Output is correct
5 Correct 21 ms 33132 KB Output is correct
6 Correct 20 ms 33260 KB Output is correct
7 Correct 20 ms 33132 KB Output is correct
8 Correct 20 ms 33132 KB Output is correct
9 Correct 21 ms 33388 KB Output is correct
10 Correct 21 ms 33388 KB Output is correct
11 Correct 21 ms 33388 KB Output is correct
12 Correct 21 ms 33388 KB Output is correct
13 Correct 23 ms 33388 KB Output is correct
14 Correct 21 ms 33388 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 33132 KB Output is correct
2 Correct 20 ms 33132 KB Output is correct
3 Correct 20 ms 33132 KB Output is correct
4 Correct 20 ms 33132 KB Output is correct
5 Correct 21 ms 33132 KB Output is correct
6 Correct 20 ms 33260 KB Output is correct
7 Correct 20 ms 33132 KB Output is correct
8 Correct 20 ms 33132 KB Output is correct
9 Correct 20 ms 33132 KB Output is correct
10 Correct 20 ms 33132 KB Output is correct
11 Correct 20 ms 33132 KB Output is correct
12 Correct 21 ms 33388 KB Output is correct
13 Correct 21 ms 33388 KB Output is correct
14 Correct 21 ms 33388 KB Output is correct
15 Correct 21 ms 33388 KB Output is correct
16 Correct 23 ms 33388 KB Output is correct
17 Correct 21 ms 33388 KB Output is correct
18 Correct 416 ms 49220 KB Output is correct
19 Correct 414 ms 49772 KB Output is correct
20 Correct 397 ms 49388 KB Output is correct
21 Correct 420 ms 49644 KB Output is correct
22 Correct 415 ms 49752 KB Output is correct
23 Correct 417 ms 49816 KB Output is correct
24 Correct 431 ms 50028 KB Output is correct