Submission #1076567

# Submission time Handle Problem Language Result Execution time Memory
1076567 2024-08-26T14:46:39 Z Pannda Gap (APIO16_gap) C++17
30 / 100
36 ms 2024 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 - 1) / (n - 1) + 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 0 ms 344 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 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 8 ms 696 KB Output is correct
17 Correct 7 ms 656 KB Output is correct
18 Correct 6 ms 616 KB Output is correct
19 Correct 6 ms 856 KB Output is correct
20 Correct 5 ms 856 KB Output is correct
21 Correct 27 ms 1880 KB Output is correct
22 Correct 36 ms 1872 KB Output is correct
23 Correct 26 ms 1880 KB Output is correct
24 Correct 26 ms 1880 KB Output is correct
25 Correct 25 ms 1880 KB Output is correct
26 Correct 29 ms 1880 KB Output is correct
27 Correct 25 ms 1880 KB Output is correct
28 Correct 26 ms 1880 KB Output is correct
29 Correct 34 ms 2024 KB Output is correct
30 Correct 24 ms 1960 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 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 Incorrect 0 ms 344 KB Output isn't correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Incorrect 0 ms 344 KB Output isn't correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Incorrect 0 ms 344 KB Output isn't correct
16 Correct 5 ms 596 KB Output is correct
17 Correct 5 ms 600 KB Output is correct
18 Correct 5 ms 600 KB Output is correct
19 Correct 5 ms 600 KB Output is correct
20 Correct 2 ms 600 KB Output is correct
21 Correct 17 ms 1076 KB Output is correct
22 Correct 19 ms 1112 KB Output is correct
23 Correct 29 ms 1112 KB Output is correct
24 Correct 16 ms 1112 KB Output is correct
25 Incorrect 33 ms 1112 KB Output isn't correct
26 Correct 18 ms 1112 KB Output is correct
27 Correct 23 ms 1112 KB Output is correct
28 Correct 22 ms 1108 KB Output is correct
29 Correct 16 ms 1112 KB Output is correct
30 Correct 9 ms 1112 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct