Submission #1076560

# Submission time Handle Problem Language Result Execution time Memory
1076560 2024-08-26T14:44:41 Z Pannda Gap (APIO16_gap) C++17
65.1285 / 100
43 ms 2032 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 || n <= 11) {
        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 = 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 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 388 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 0 ms 344 KB Output is correct
10 Correct 0 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 432 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 7 ms 856 KB Output is correct
17 Correct 7 ms 856 KB Output is correct
18 Correct 8 ms 660 KB Output is correct
19 Correct 8 ms 816 KB Output is correct
20 Correct 5 ms 696 KB Output is correct
21 Correct 29 ms 2032 KB Output is correct
22 Correct 29 ms 1812 KB Output is correct
23 Correct 30 ms 1880 KB Output is correct
24 Correct 29 ms 1948 KB Output is correct
25 Correct 24 ms 1880 KB Output is correct
26 Correct 35 ms 1964 KB Output is correct
27 Correct 43 ms 1972 KB Output is correct
28 Correct 32 ms 1884 KB Output is correct
29 Correct 34 ms 1772 KB Output is correct
30 Correct 22 ms 1880 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 0 ms 344 KB Output is correct
2 Partially correct 0 ms 344 KB Partially correct
3 Partially correct 1 ms 344 KB Partially correct
4 Partially correct 0 ms 344 KB Partially correct
5 Partially correct 0 ms 344 KB Partially correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 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 Partially correct 1 ms 344 KB Partially correct
16 Correct 6 ms 600 KB Output is correct
17 Correct 6 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 3 ms 600 KB Output is correct
21 Correct 28 ms 1112 KB Output is correct
22 Correct 21 ms 1112 KB Output is correct
23 Correct 22 ms 1176 KB Output is correct
24 Correct 25 ms 1128 KB Output is correct
25 Partially correct 38 ms 1216 KB Partially correct
26 Correct 23 ms 1112 KB Output is correct
27 Correct 23 ms 1176 KB Output is correct
28 Correct 25 ms 1236 KB Output is correct
29 Correct 20 ms 1112 KB Output is correct
30 Correct 15 ms 1112 KB Output is correct
31 Partially correct 0 ms 344 KB Partially correct
32 Correct 0 ms 344 KB Output is correct