oj.uz

Submission #438877

# Submission time Handle Problem Language Result Execution time Memory
438877 2021-06-28T21:27:59 Z JovanB Maxcomp (info1cup18_maxcomp) C++17
100 / 100
 153 ms 48188 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using ld = long double;

const int MAXN = 1000;

ll mat1[MAXN+5][MAXN+5];
ll mat2[MAXN+5][MAXN+5];
ll mat3[MAXN+5][MAXN+5];
ll mat4[MAXN+5][MAXN+5];
ll a[MAXN+5][MAXN+5];

int main(){
    ios_base::sync_with_stdio(false), cin.tie(0);
    cout.precision(10);
    cout << fixed;

    int n, m;
    cin >> n >> m;
    for(int i=1; i<=n; i++){
        for(int j=1; j<=m; j++){
            cin >> a[i][j];
        }
    }
    ll res = -1;
    for(int i=1; i<=n; i++){
        for(int j=1; j<=m; j++){
            mat1[i][j] = i+j - a[i][j];
            if(i > 1) mat1[i][j] = max(mat1[i][j], mat1[i-1][j]);
            if(j > 1) mat1[i][j] = max(mat1[i][j], mat1[i][j-1]);
        }
    }
    for(int i=1; i<=n; i++){
        for(int j=m; j>=1; j--){
            mat2[i][j] = i-j - a[i][j];
            if(i > 1) mat2[i][j] = max(mat2[i][j], mat2[i-1][j]);
            if(j < m) mat2[i][j] = max(mat2[i][j], mat2[i][j+1]);
        }
    }
    for(int i=n; i>=1; i--){
        for(int j=1; j<=m; j++){
            mat3[i][j] = -i+j - a[i][j];
            if(i < n) mat3[i][j] = max(mat3[i][j], mat3[i+1][j]);
            if(j > 1) mat3[i][j] = max(mat3[i][j], mat3[i][j-1]);
        }
    }
    for(int i=n; i>=1; i--){
        for(int j=m; j>=1; j--){
            mat4[i][j] = -i-j - a[i][j];
            if(i < n) mat4[i][j] = max(mat4[i][j], mat4[i+1][j]);
            if(j < m) mat4[i][j] = max(mat4[i][j], mat4[i][j+1]);
        }
    }
    for(int i=1; i<=n; i++){
        for(int j=1; j<=m; j++){
            res = max(res, a[i][j]-i-j + mat1[i][j] - 1);
            res = max(res, a[i][j]-i+j + mat2[i][j] - 1);
            res = max(res, a[i][j]+i-j + mat3[i][j] - 1);
            res = max(res, a[i][j]+i+j + mat4[i][j] - 1);
        }
    }
    cout << res << "\n";
    return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct

Subtask #2
15.0 / 15.0

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

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 2 ms 1356 KB Output is correct
10 Correct 2 ms 1356 KB Output is correct
11 Correct 2 ms 1356 KB Output is correct
12 Correct 2 ms 1356 KB Output is correct
13 Correct 2 ms 1356 KB Output is correct
14 Correct 2 ms 1356 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 2 ms 1356 KB Output is correct
13 Correct 2 ms 1356 KB Output is correct
14 Correct 2 ms 1356 KB Output is correct
15 Correct 2 ms 1356 KB Output is correct
16 Correct 2 ms 1356 KB Output is correct
17 Correct 2 ms 1356 KB Output is correct
18 Correct 151 ms 48188 KB Output is correct
19 Correct 151 ms 48124 KB Output is correct
20 Correct 150 ms 47812 KB Output is correct
21 Correct 150 ms 48168 KB Output is correct
22 Correct 147 ms 48068 KB Output is correct
23 Correct 153 ms 48068 KB Output is correct
24 Correct 147 ms 46988 KB Output is correct