Submission #838561

# Submission time Handle Problem Language Result Execution time Memory
838561 2023-08-27T11:40:43 Z tch1cherin Gap (APIO16_gap) C++17
48.0554 / 100
99 ms 3052 KB
#include "gap.h"
#include <bits/stdc++.h>
using namespace std;

long long findGap(int T, int N) {
	if (T == 1) {
		long long Min = -1, Max = 1e18l + 1;
		vector<long long> front, back;
		for (int i = 0; i < (N + 1) / 2; i++) {
			MinMax(Min + 1, Max - 1, &Min, &Max);
			if (Min != Max) {
				front.push_back(Min);
			}
			back.push_back(Max);
		}
		reverse(back.begin(), back.end());
		vector<long long> A;
		for (auto v : front) {
			A.push_back(v);
		}
		for (auto v : back) {
			A.push_back(v);
		}
		long long gap = 0;
		for (int i = 0; i < N - 1; i++) {
			gap = max(gap, A[i + 1] - A[i]);
		}
		return gap;
	} else {
		long long Min, Max;
		MinMax(0, 1e18, &Min, &Max);
		priority_queue<tuple<long double, long long, long long>> Q;
		Q.push({1, Min, Max});
		long long maxConfirmed = (Max - Min + N - 2) / (N - 1);
		uniform_real_distribution<long double> dist(0, 1);
		mt19937 rng(chrono::steady_clock().now().time_since_epoch().count());
		while (!Q.empty()) {
			auto [p, l, r] = Q.top();
			Q.pop();
			if (r - l <= maxConfirmed) {
				continue;
			}
			long long mid = l + (r - l) / 2;
			long long Minl = -1, Maxl = -1, Minr = -1, Maxr = -1;
			if (l <= mid) {
				MinMax(l, mid, &Minl, &Maxl);
				if (Minl != -1) {
					Q.push({(Maxl - Minl) * dist(rng), Minl, Maxl});
				}
			}
			if (mid + 1 <= r && (r - mid - 1 > maxConfirmed || (Maxl != -1 && r - Maxl > maxConfirmed))) {
				MinMax(mid + 1, r, &Minr, &Maxr);
				if (Minr != -1) { 
					Q.push({(Maxl - Minl) * dist(rng), Minr, Maxr});
				}
			}
			if (Maxl != -1 && Minr != -1) {
				maxConfirmed = max(maxConfirmed, Minr - Maxl);
			}
		}
		return maxConfirmed;
	}
}
# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 8 ms 1124 KB Output is correct
17 Correct 7 ms 1148 KB Output is correct
18 Correct 9 ms 1104 KB Output is correct
19 Correct 8 ms 1116 KB Output is correct
20 Correct 7 ms 1168 KB Output is correct
21 Correct 29 ms 2936 KB Output is correct
22 Correct 29 ms 2948 KB Output is correct
23 Correct 30 ms 3044 KB Output is correct
24 Correct 29 ms 3020 KB Output is correct
25 Correct 26 ms 3052 KB Output is correct
26 Correct 30 ms 2996 KB Output is correct
27 Correct 30 ms 2956 KB Output is correct
28 Correct 29 ms 2980 KB Output is correct
29 Correct 30 ms 3040 KB Output is correct
30 Correct 24 ms 3036 KB Output is correct
31 Correct 0 ms 208 KB Output is correct
32 Correct 0 ms 208 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Partially correct 0 ms 208 KB Partially correct
3 Partially correct 0 ms 208 KB Partially correct
4 Correct 0 ms 208 KB Output is correct
5 Partially correct 0 ms 208 KB Partially correct
6 Partially correct 0 ms 208 KB Partially correct
7 Partially correct 0 ms 208 KB Partially correct
8 Partially correct 0 ms 208 KB Partially correct
9 Partially correct 0 ms 208 KB Partially correct
10 Partially correct 0 ms 208 KB Partially correct
11 Partially correct 1 ms 336 KB Partially correct
12 Partially correct 1 ms 336 KB Partially correct
13 Partially correct 1 ms 336 KB Partially correct
14 Partially correct 1 ms 336 KB Partially correct
15 Partially correct 1 ms 336 KB Partially correct
16 Partially correct 9 ms 620 KB Partially correct
17 Partially correct 7 ms 612 KB Partially correct
18 Partially correct 6 ms 508 KB Partially correct
19 Partially correct 6 ms 504 KB Partially correct
20 Partially correct 3 ms 464 KB Partially correct
21 Partially correct 25 ms 1320 KB Partially correct
22 Partially correct 26 ms 1420 KB Partially correct
23 Partially correct 23 ms 1304 KB Partially correct
24 Partially correct 25 ms 1288 KB Partially correct
25 Partially correct 99 ms 2252 KB Partially correct
26 Partially correct 28 ms 1480 KB Partially correct
27 Partially correct 25 ms 1328 KB Partially correct
28 Partially correct 28 ms 1488 KB Partially correct
29 Partially correct 26 ms 1316 KB Partially correct
30 Partially correct 8 ms 1060 KB Partially correct
31 Correct 0 ms 208 KB Output is correct
32 Correct 0 ms 208 KB Output is correct