oj.uz

Submission #939469

# Submission time Handle Problem Language Result Execution time Memory
939469 2024-03-06T11:46:06 Z kitlix The Kingdom of JOIOI (JOI17_joioi) C++17
100 / 100
 932 ms 70548 KB 
#include <bits/stdc++.h>
#define int long long

using namespace std;

const int INF = 1e18;

signed main() {
    ios_base::sync_with_stdio(0), cin.tie(0);
    int n, m;
    cin >> n >> m;
    vector<vector<int>> a(n, vector<int>(m));
    int mn = INF;
    for (auto& r : a)
        for (auto& el : r) {
            cin >> el;
            mn = min(mn, el);
        }
    auto check = [&](int dif) {
        int othermx = -INF, othermn = INF;
        int curmx = m;
        for (int i = 0; i < n; ++i) {
            for (int j = 0; j < curmx; ++j) {
                if (a[i][j] - mn > dif) {
                    curmx = j;
                    break;
                }
            }
            for (int j = curmx; j < m; ++j) {
                othermx = max(othermx, a[i][j]);
                othermn = min(othermn, a[i][j]);
            }
        }
        if (othermx - othermn <= dif || curmx == m)
            return true;
        othermx = -INF, othermn = INF;
        curmx = m;
        for (int i = n - 1; i >= 0; --i) {
            for (int j = 0; j < curmx; ++j) {
                if (a[i][j] - mn > dif) {
                    curmx = j;
                    break;
                }
            }
            for (int j = curmx; j < m; ++j) {
                othermx = max(othermx, a[i][j]);
                othermn = min(othermn, a[i][j]);
            }
        }
        if (othermx - othermn <= dif || curmx == m)
            return true;
        othermx = -INF, othermn = INF;
        curmx = -1;
        for (int i = 0; i < n; ++i) {
            for (int j = m - 1; j > curmx; --j) {
                if (a[i][j] - mn > dif) {
                    curmx = j;
                    break;
                }
            }
            for (int j = curmx; j >= 0; --j) {
                othermx = max(othermx, a[i][j]);
                othermn = min(othermn, a[i][j]);
            }
        }
        if (othermx - othermn <= dif || curmx == -1)
            return true;
        othermx = -INF, othermn = INF;
        curmx = -1;
        for (int i = n - 1; i >= 0; --i) {
            for (int j = m - 1; j > curmx; --j) {
                if (a[i][j] - mn > dif) {
                    curmx = j;
                    break;
                }
            }
            for (int j = curmx; j >= 0; --j) {
                othermx = max(othermx, a[i][j]);
                othermn = min(othermn, a[i][j]);
            }
        }
        if (othermx - othermn <= dif || curmx == -1)
            return true;
        return false;
        };
    int l = -1, r = INF;
    while (l + 1 < r) {
        int mid = (l + r) / 2;
        if (check(mid))
            r = mid;
        else
            l = mid;
    }
    cout << r;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 452 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 452 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 452 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 452 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 604 KB Output is correct
17 Correct 7 ms 860 KB Output is correct
18 Correct 6 ms 860 KB Output is correct
19 Correct 7 ms 860 KB Output is correct
20 Correct 6 ms 860 KB Output is correct
21 Correct 7 ms 1116 KB Output is correct
22 Correct 9 ms 1164 KB Output is correct
23 Correct 9 ms 1164 KB Output is correct
24 Correct 6 ms 860 KB Output is correct
25 Correct 9 ms 1116 KB Output is correct
26 Correct 8 ms 1160 KB Output is correct
27 Correct 6 ms 1116 KB Output is correct
28 Correct 7 ms 1116 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 452 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 452 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 604 KB Output is correct
17 Correct 7 ms 860 KB Output is correct
18 Correct 6 ms 860 KB Output is correct
19 Correct 7 ms 860 KB Output is correct
20 Correct 6 ms 860 KB Output is correct
21 Correct 7 ms 1116 KB Output is correct
22 Correct 9 ms 1164 KB Output is correct
23 Correct 9 ms 1164 KB Output is correct
24 Correct 6 ms 860 KB Output is correct
25 Correct 9 ms 1116 KB Output is correct
26 Correct 8 ms 1160 KB Output is correct
27 Correct 6 ms 1116 KB Output is correct
28 Correct 7 ms 1116 KB Output is correct
29 Correct 511 ms 52360 KB Output is correct
30 Correct 610 ms 50908 KB Output is correct
31 Correct 577 ms 55576 KB Output is correct
32 Correct 647 ms 55024 KB Output is correct
33 Correct 456 ms 47704 KB Output is correct
34 Correct 643 ms 54996 KB Output is correct
35 Correct 796 ms 70412 KB Output is correct
36 Correct 768 ms 61528 KB Output is correct
37 Correct 932 ms 70548 KB Output is correct