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Submission #400507

# Submission time Handle Problem Language Result Execution time Memory
400507 2021-05-08T07:42:53 Z dolphingarlic Maxcomp (info1cup18_maxcomp) C++14
100 / 100
 169 ms 79472 KB 
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;

ll grid[1001][1001], val[1001][1001][4], mn[1002][1002][4];

int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n, m;
    cin >> n >> m;
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= m; j++) {
            cin >> grid[i][j];
            val[i][j][0] = grid[i][j] - i - j + 1;
            val[i][j][1] = grid[i][j] - m + j - i;
            val[i][j][2] = grid[i][j] + i + j - 1;
            val[i][j][3] = grid[i][j] + m - j + i;
        }
    
    ll ans = 0;
    memset(mn, 0x3f, sizeof mn);
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= m; j++) {
            mn[i][j][0] = min({val[i][j][0], mn[i - 1][j][0], mn[i][j - 1][0]});
            ans = max(ans, val[i][j][0] - mn[i][j][0]);
        }
    for (int i = 1; i <= n; i++)
        for (int j = m; j; j--) {
            mn[i][j][1] = min({val[i][j][1], mn[i - 1][j][1], mn[i][j + 1][1]});
            ans = max(ans, val[i][j][1] - mn[i][j][1]);
        }
    for (int i = n; i; i--)
        for (int j = m; j; j--) {
            mn[i][j][2] = min({val[i][j][2], mn[i + 1][j][2], mn[i][j + 1][2]});
            ans = max(ans, val[i][j][2] - mn[i][j][2]);
        }
    for (int i = n; i; i--)
        for (int j = 1; j <= m; j++) {
            mn[i][j][3] = min({val[i][j][3], mn[i + 1][j][3], mn[i][j - 1][3]});
            ans = max(ans, val[i][j][3] - mn[i][j][3]);
        }
    cout << ans - 1;
    return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 31692 KB Output is correct
2 Correct 14 ms 31736 KB Output is correct
3 Correct 14 ms 31692 KB Output is correct
4 Correct 13 ms 31680 KB Output is correct
5 Correct 14 ms 31684 KB Output is correct
6 Correct 14 ms 31692 KB Output is correct
7 Correct 14 ms 31720 KB Output is correct
8 Correct 14 ms 31692 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 31820 KB Output is correct
2 Correct 15 ms 31732 KB Output is correct
3 Correct 14 ms 31780 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 31692 KB Output is correct
2 Correct 14 ms 31736 KB Output is correct
3 Correct 14 ms 31692 KB Output is correct
4 Correct 13 ms 31680 KB Output is correct
5 Correct 14 ms 31684 KB Output is correct
6 Correct 14 ms 31692 KB Output is correct
7 Correct 14 ms 31720 KB Output is correct
8 Correct 14 ms 31692 KB Output is correct
9 Correct 15 ms 32204 KB Output is correct
10 Correct 14 ms 32220 KB Output is correct
11 Correct 14 ms 32288 KB Output is correct
12 Correct 15 ms 32204 KB Output is correct
13 Correct 14 ms 32204 KB Output is correct
14 Correct 15 ms 32204 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 31692 KB Output is correct
2 Correct 14 ms 31736 KB Output is correct
3 Correct 14 ms 31692 KB Output is correct
4 Correct 13 ms 31680 KB Output is correct
5 Correct 14 ms 31684 KB Output is correct
6 Correct 14 ms 31692 KB Output is correct
7 Correct 14 ms 31720 KB Output is correct
8 Correct 14 ms 31692 KB Output is correct
9 Correct 16 ms 31820 KB Output is correct
10 Correct 15 ms 31732 KB Output is correct
11 Correct 14 ms 31780 KB Output is correct
12 Correct 15 ms 32204 KB Output is correct
13 Correct 14 ms 32220 KB Output is correct
14 Correct 14 ms 32288 KB Output is correct
15 Correct 15 ms 32204 KB Output is correct
16 Correct 14 ms 32204 KB Output is correct
17 Correct 15 ms 32204 KB Output is correct
18 Correct 164 ms 79472 KB Output is correct
19 Correct 163 ms 79428 KB Output is correct
20 Correct 157 ms 79024 KB Output is correct
21 Correct 163 ms 79428 KB Output is correct
22 Correct 169 ms 79472 KB Output is correct
23 Correct 161 ms 79428 KB Output is correct
24 Correct 162 ms 78276 KB Output is correct