oj.uz

Submission #791988

# Submission time Handle Problem Language Result Execution time Memory
791988 2023-07-24T13:29:38 Z Cookie Maxcomp (info1cup18_maxcomp) C++14
100 / 100
 97 ms 13304 KB 
#include<bits/stdc++.h>
#include<fstream>
#pragma GCC optimize("Ofast,O3,unroll-loops")
#pragma GCC target("avx2")
using namespace std;
//ifstream fin("FEEDING.INP");
//ofstream fout("FEEDING.OUT");
#define sz(a) (int)a.size()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
const ll mxn = 2e5 + 5, base = 972663749;
const ll mod = 911382323, mxv = 1e9 + 1, inf = 2e9;
int n, m;
int col[1005];
int a[1005][1005];
signed main()
{
     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n >> m;
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= m; j++){
            cin >> a[i][j];
        }
    }
    for(int i = 1; i <= m; i++)col[i] = -inf;
    int ans = 0;
    for(int i = 1; i <= n; i++){
        int mxval = -inf;
        for(int j = 1; j <= m; j++){
            col[j] = max(col[j], -a[i][j] + i + j);
            mxval = max(mxval, col[j]);
            ans = max(ans, a[i][j] - i - j + mxval);
        }
    }
    for(int i = 1; i <= m; i++)col[i] = -inf;
    for(int i = 1; i <= n; i++){
        int mxval = -inf;
        for(int j = m; j >= 1; j--){
            col[j] = max(col[j], -a[i][j] + i - j);
            mxval = max(mxval, col[j]);
            ans = max(ans, a[i][j] - i + j + mxval);
        }
    }
    for(int i = 1; i <= m; i++)col[i] = -inf;
    for(int i = n; i >= 1; i--){
        int mxval = -inf;
        for(int j = m; j >= 1; j--){
            col[j] = max(col[j], -a[i][j] - i - j);
            mxval = max(mxval, col[j]);
            ans = max(ans, a[i][j] + i + j + mxval);
        }
    }
    for(int i = 1; i <= m; i++)col[i] = -inf;
    for(int i = n; i >= 1; i--){
        int mxval = -inf;
        for(int j = 1; j <= m; j++){
            col[j] = max(col[j], -a[i][j] - i + j);
            mxval = max(mxval, col[j]);
            ans = max(ans, a[i][j] + i - j + mxval);
        }
    }
    cout << ans - 1;
    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 1 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 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 1 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 476 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 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 1 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 476 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 82 ms 12768 KB Output is correct
19 Correct 78 ms 12752 KB Output is correct
20 Correct 73 ms 12368 KB Output is correct
21 Correct 87 ms 12664 KB Output is correct
22 Correct 90 ms 12704 KB Output is correct
23 Correct 82 ms 12732 KB Output is correct
24 Correct 97 ms 13304 KB Output is correct