Submission #1076575

# Submission time Handle Problem Language Result Execution time Memory
1076575 2024-08-26T14:48:12 Z Pannda Gap (APIO16_gap) C++17
30 / 100
36 ms 3592 KB
#include "gap.h"

#include <bits/stdc++.h>
using namespace std;

long long findGap(int type, int n) {
    constexpr long long C = 1e18;
    if (type == 1) {
        vector<long long> a(n);
        int idx_l = 0, idx_r = n - 1;
        long long l = 0, r = C;
        for (int t = 0; t < (n + 1) / 2; t++) {
            MinMax(l, r, &a[idx_l], &a[idx_r]);
            l = a[idx_l] + 1;
            r = a[idx_r] - 1;
            idx_l++;
            idx_r--;
        }
        long long ans = 0;
        for (int i = 0; i + 1 < n; i++) {
            ans = max(ans, a[i + 1] - a[i]);
        }
        return ans;
    } else {
        long long x;
        long long last;
        MinMax(0, C, &x, &last);
        long long ans = (last - x) / (n - 1);

        while (last - x > ans) {
            // with x, find some d such that [x, x + d] is only x, and [x + d + 1, x + d + 1 + d] is none empty and is (mn, mx)
            // update ans with mn - x, and set new x to mx
            // jump x until [x + ans] is only x
            while (last - x > ans) {
                // assert( [x, x + ans] is only x)
                long long s = x + ans + 1;
                assert(s <= C);
                long long mn, mx;
                MinMax(s, s + ans, &mn, &mx);
                if (mn == -1) {
                    ans = ans + ans + 1;
                } else {
                    ans = mn - x;
                    x = mx;
                    break;
                }
            }
            while (last - x > ans) {
                long long mn, mx;
                MinMax(x + 1, x + ans, &mn, &mx);
                if (mn == -1) {
                    break;
                } else {
                    x = mx;
                }
            }
        }

        return ans;
    }
}
# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 1 ms 2392 KB Output is correct
16 Correct 8 ms 856 KB Output is correct
17 Correct 7 ms 856 KB Output is correct
18 Correct 7 ms 2648 KB Output is correct
19 Correct 11 ms 2648 KB Output is correct
20 Correct 6 ms 660 KB Output is correct
21 Correct 28 ms 2020 KB Output is correct
22 Correct 25 ms 3592 KB Output is correct
23 Correct 27 ms 3416 KB Output is correct
24 Correct 36 ms 3416 KB Output is correct
25 Correct 28 ms 3416 KB Output is correct
26 Correct 28 ms 3416 KB Output is correct
27 Correct 28 ms 3416 KB Output is correct
28 Correct 27 ms 3416 KB Output is correct
29 Correct 25 ms 3416 KB Output is correct
30 Correct 21 ms 3412 KB Output is correct
31 Correct 0 ms 2392 KB Output is correct
32 Correct 1 ms 2392 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 2388 KB Output is correct
2 Correct 0 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Incorrect 0 ms 2392 KB Output isn't correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 0 ms 2392 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Incorrect 0 ms 2392 KB Output isn't correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Incorrect 1 ms 2392 KB Output isn't correct
16 Correct 5 ms 2548 KB Output is correct
17 Correct 5 ms 2392 KB Output is correct
18 Correct 7 ms 2392 KB Output is correct
19 Correct 5 ms 2392 KB Output is correct
20 Correct 2 ms 2392 KB Output is correct
21 Correct 27 ms 2740 KB Output is correct
22 Correct 27 ms 2800 KB Output is correct
23 Correct 16 ms 2668 KB Output is correct
24 Correct 21 ms 2648 KB Output is correct
25 Incorrect 25 ms 2648 KB Output isn't correct
26 Correct 21 ms 2648 KB Output is correct
27 Correct 17 ms 2648 KB Output is correct
28 Correct 17 ms 2648 KB Output is correct
29 Correct 16 ms 2648 KB Output is correct
30 Correct 8 ms 2648 KB Output is correct
31 Correct 0 ms 2392 KB Output is correct
32 Correct 1 ms 2392 KB Output is correct