oj.uz

Submission #392066

# Submission time Handle Problem Language Result Execution time Memory
392066 2021-04-20T11:39:17 Z palilo The Kingdom of JOIOI (JOI17_joioi) C++17
100 / 100
 570 ms 54860 KB 
#include <bits/stdc++.h>
using namespace std;

int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
#ifdef home
    freopen("in", "r", stdin);
    freopen("out", "w", stdout);
#endif
    int n, m;
    cin >> n >> m;

    vector<vector<int>> h(n, vector<int>(m));
    for (auto& v : h)
        for (auto& x : v)
            cin >> x;

    int mn_h = INT_MAX, mx_h = INT_MIN;
    for (const auto& v : h) {
        auto p = minmax_element(v.begin(), v.end());
        mn_h = min(mn_h, *p.first);
        mx_h = max(mx_h, *p.second);
    }

    auto ok = [&](int lim) {
        int64_t pivot = m;
        for (const auto& v : h) {
            pivot = min(pivot, find_if(v.begin(), v.begin() + pivot, [&](auto& x) { return x > mn_h + lim; }) - v.begin());
            if (any_of(v.begin() + pivot, v.end(), [&](auto& x) { return x < mx_h - lim; }))
                return false;
        }
        return true;
    };

    int ans = mx_h - mn_h;
    for (int t = 0; t < 4; ++t) {
        if (t & 1)
            for (auto& v : h)
                reverse(v.begin(), v.end());
        else if (t == 2)
            reverse(h.begin(), h.end());

        int lo = 0, hi = ans;
        while (lo != hi) {
            int mid = (lo + hi) >> 1;
            ok(mid) ? hi = mid : lo = mid + 1;
        }
        ans = min(ans, lo);
    }
    cout << ans;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 204 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 3 ms 464 KB Output is correct
17 Correct 5 ms 756 KB Output is correct
18 Correct 5 ms 716 KB Output is correct
19 Correct 5 ms 716 KB Output is correct
20 Correct 5 ms 588 KB Output is correct
21 Correct 7 ms 832 KB Output is correct
22 Correct 6 ms 844 KB Output is correct
23 Correct 6 ms 848 KB Output is correct
24 Correct 5 ms 716 KB Output is correct
25 Correct 6 ms 844 KB Output is correct
26 Correct 8 ms 848 KB Output is correct
27 Correct 6 ms 848 KB Output is correct
28 Correct 7 ms 844 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 3 ms 464 KB Output is correct
17 Correct 5 ms 756 KB Output is correct
18 Correct 5 ms 716 KB Output is correct
19 Correct 5 ms 716 KB Output is correct
20 Correct 5 ms 588 KB Output is correct
21 Correct 7 ms 832 KB Output is correct
22 Correct 6 ms 844 KB Output is correct
23 Correct 6 ms 848 KB Output is correct
24 Correct 5 ms 716 KB Output is correct
25 Correct 6 ms 844 KB Output is correct
26 Correct 8 ms 848 KB Output is correct
27 Correct 6 ms 848 KB Output is correct
28 Correct 7 ms 844 KB Output is correct
29 Correct 389 ms 37340 KB Output is correct
30 Correct 374 ms 36292 KB Output is correct
31 Correct 410 ms 39092 KB Output is correct
32 Correct 398 ms 39280 KB Output is correct
33 Correct 344 ms 34024 KB Output is correct
34 Correct 406 ms 39364 KB Output is correct
35 Correct 570 ms 54860 KB Output is correct
36 Correct 473 ms 47644 KB Output is correct
37 Correct 567 ms 54844 KB Output is correct