oj.uz

Submission #524131

# Submission time Handle Problem Language Result Execution time Memory
524131 2022-02-08T16:55:02 Z FireGhost1301 The Kingdom of JOIOI (JOI17_joioi) C++11
100 / 100
 904 ms 17928 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 2000 + 3;
int n, m, a[N][N];
int mi = INT_MAX, mx = 0;

bool chk(int d) {
    for (int i = 1, p = 0; i <= n; ++i) {
        for (int j = 1; j <= m; ++j) {
            if (a[i][j] + d < mx) p = max(p, j + 1);
        }
        for (int j = 1; j <= m; ++j) {
            if (a[i][j] - d > mi && j < p) return 0;
        }
    }
    return 1;
}

int calc() {
    int l = 0, r = mx - mi - 1, ans = r + 1, mid;
    while (l <= r) {
        mid = (l + r) >> 1;
        if (chk(mid)) ans = mid, r = mid - 1;
        else l = mid + 1;
    }
    return ans;
}

void solve() {
    cin >> n >> m;
    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= m; ++j) {
            cin >> a[i][j];
            mx = max(mx, a[i][j]);
            mi = min(mi, a[i][j]);
        }
    }
    int ans = calc();
    reverse(a + 1, a + n + 1);
    ans = min(ans, calc());
    for (int i = 1; i <= n; ++i)
        reverse(a[i] + 1, a[i] + m + 1);
    ans = min(ans, calc());
    reverse(a + 1, a + n + 1);
    ans = min(ans, calc());
    cout << ans;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    solve();
    return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 272 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 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 316 KB Output is correct
14 Correct 1 ms 332 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 272 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 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 316 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 4 ms 1860 KB Output is correct
17 Correct 8 ms 2100 KB Output is correct
18 Correct 7 ms 2124 KB Output is correct
19 Correct 8 ms 2124 KB Output is correct
20 Correct 7 ms 1824 KB Output is correct
21 Correct 9 ms 2228 KB Output is correct
22 Correct 11 ms 2220 KB Output is correct
23 Correct 13 ms 2244 KB Output is correct
24 Correct 9 ms 1952 KB Output is correct
25 Correct 14 ms 2180 KB Output is correct
26 Correct 11 ms 2240 KB Output is correct
27 Correct 9 ms 2244 KB Output is correct
28 Correct 9 ms 2176 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 272 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 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 316 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 4 ms 1860 KB Output is correct
17 Correct 8 ms 2100 KB Output is correct
18 Correct 7 ms 2124 KB Output is correct
19 Correct 8 ms 2124 KB Output is correct
20 Correct 7 ms 1824 KB Output is correct
21 Correct 9 ms 2228 KB Output is correct
22 Correct 11 ms 2220 KB Output is correct
23 Correct 13 ms 2244 KB Output is correct
24 Correct 9 ms 1952 KB Output is correct
25 Correct 14 ms 2180 KB Output is correct
26 Correct 11 ms 2240 KB Output is correct
27 Correct 9 ms 2244 KB Output is correct
28 Correct 9 ms 2176 KB Output is correct
29 Correct 339 ms 16228 KB Output is correct
30 Correct 384 ms 16964 KB Output is correct
31 Correct 491 ms 17056 KB Output is correct
32 Correct 360 ms 16840 KB Output is correct
33 Correct 294 ms 14944 KB Output is correct
34 Correct 420 ms 16956 KB Output is correct
35 Correct 706 ms 17860 KB Output is correct
36 Correct 651 ms 17428 KB Output is correct
37 Correct 904 ms 17928 KB Output is correct