oj.uz

Submission #364832

# Submission time Handle Problem Language Result Execution time Memory
364832 2021-02-10T08:06:29 Z amunduzbaev Maxcomp (info1cup18_maxcomp) C++14
100 / 100
 199 ms 146796 KB 
/** made by amunduzbaev **/
#include <bits/stdc++.h>
using namespace std;
 
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define ub upper_bound
#define lb lower_bound
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(),x.rend()
#define NeedForSpeed ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define int long long
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii; 
typedef pair<ll, ll> pll; 
typedef vector<ll> vll;
typedef vector<int> vii;
typedef vector<pll> vpll;
typedef vector<pii> vpii;
template<class T> bool umin(T& a, const T& b) {return a > b? a = b, true:false;}
template<class T> bool umax(T& a, const T& b) {return a < b? a = b, true:false;}

const int N = 2e3+5;
const int mod = 1e9+7;
const ll inf = 1e18;
const ld Pi = acos(-1);

#define MULTI 0

int n, m, k, ans, res, a[N][N];
int pp[N][N], ps[N][N], sp[N][N], ss[N][N];

void solve(int t_case){
	cin>>n>>m;
	for(int i=0;i<n;i++){
		for(int j=0;j<m;j++){
			cin>>a[i][j];
		}
	}
	res = -2;
	
	for(int i=0;i<N;i++){
		for(int j=0;j<N;j++){
			pp[i][j] = -inf;
			ps[i][j] = -inf;
			sp[i][j] = -inf;
			ss[i][j] = -inf;
		}
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<m;j++){
			pp[i][j] = -a[i][j] + i + j;
			if(i) umax(pp[i][j], pp[i-1][j]);
			if(j) umax(pp[i][j], pp[i][j-1]);
		}
	}
	
	for(int i=0;i<n;i++){
		for(int j=m-1;j>=0;j--){
			ps[i][j] = -a[i][j] + i - j;
			if(i) umax(ps[i][j], ps[i-1][j]);
			umax(ps[i][j], ps[i][j+1]);
		}
	}
	
	for(int i=n-1;i>=0;i--){
		for(int j=0;j<m;j++){
			sp[i][j] = -a[i][j] - i + j;
			umax(sp[i][j], sp[i+1][j]);
			if(j) umax(sp[i][j], sp[i][j-1]);
		}
	}
	for(int i=n-1;i>=0;i--){
		for(int j=m-1;j>=0;j--){
			ss[i][j] = -a[i][j] - i - j;
			umax(ss[i][j], ss[i+1][j]);
			umax(ss[i][j], ss[i][j+1]);
		}
	}
	
	//for(int i=0;i<n;i++){
		//for(int j=0;j<m;j++){
			//cout<<pp[i][j]<<" ";
		//}
		//cout<<"\n";
	//}
	
	for(int i=0;i<n;i++){
		for(int j=0;j<m;j++){
			int tt = a[i][j] + i + j -1;
			umax(res, tt + ss[i][j]);
			tt = a[i][j] + i - j-1, umax(res, tt + sp[i][j]);
			tt = a[i][j] - i + j-1, umax(res, tt + ps[i][j]);
			tt = a[i][j] - i - j-1, umax(res, tt + pp[i][j]);
		}
	}
	
	cout<<res<<"\n";
}



signed main(){
	NeedForSpeed
	if(!MULTI) {
		solve(1);
	} else {
		int t; cin>>t;
		for(int t_case = 1; t_case <= t; t_case++) solve(t_case);
	}
	return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 126188 KB Output is correct
2 Correct 72 ms 126188 KB Output is correct
3 Correct 71 ms 126336 KB Output is correct
4 Correct 69 ms 126188 KB Output is correct
5 Correct 70 ms 126188 KB Output is correct
6 Correct 71 ms 126188 KB Output is correct
7 Correct 81 ms 126316 KB Output is correct
8 Correct 71 ms 126268 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 126188 KB Output is correct
2 Correct 69 ms 126188 KB Output is correct
3 Correct 70 ms 126188 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 126188 KB Output is correct
2 Correct 72 ms 126188 KB Output is correct
3 Correct 71 ms 126336 KB Output is correct
4 Correct 69 ms 126188 KB Output is correct
5 Correct 70 ms 126188 KB Output is correct
6 Correct 71 ms 126188 KB Output is correct
7 Correct 81 ms 126316 KB Output is correct
8 Correct 71 ms 126268 KB Output is correct
9 Correct 74 ms 126364 KB Output is correct
10 Correct 69 ms 126444 KB Output is correct
11 Correct 69 ms 126444 KB Output is correct
12 Correct 77 ms 126444 KB Output is correct
13 Correct 69 ms 126444 KB Output is correct
14 Correct 70 ms 126444 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 126188 KB Output is correct
2 Correct 72 ms 126188 KB Output is correct
3 Correct 71 ms 126336 KB Output is correct
4 Correct 69 ms 126188 KB Output is correct
5 Correct 70 ms 126188 KB Output is correct
6 Correct 71 ms 126188 KB Output is correct
7 Correct 81 ms 126316 KB Output is correct
8 Correct 71 ms 126268 KB Output is correct
9 Correct 67 ms 126188 KB Output is correct
10 Correct 69 ms 126188 KB Output is correct
11 Correct 70 ms 126188 KB Output is correct
12 Correct 74 ms 126364 KB Output is correct
13 Correct 69 ms 126444 KB Output is correct
14 Correct 69 ms 126444 KB Output is correct
15 Correct 77 ms 126444 KB Output is correct
16 Correct 69 ms 126444 KB Output is correct
17 Correct 70 ms 126444 KB Output is correct
18 Correct 191 ms 138092 KB Output is correct
19 Correct 199 ms 146668 KB Output is correct
20 Correct 190 ms 145920 KB Output is correct
21 Correct 193 ms 146540 KB Output is correct
22 Correct 192 ms 146540 KB Output is correct
23 Correct 194 ms 146540 KB Output is correct
24 Correct 195 ms 146796 KB Output is correct