Submission #838568

# Submission time Handle Problem Language Result Execution time Memory
838568 2023-08-27T11:57:26 Z tch1cherin Gap (APIO16_gap) C++17
30 / 100
35 ms 3184 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);
		queue<pair<long long, long long>> Q;
		Q.push({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 [l, r] = Q.front();
			Q.pop();
			if (r - l <= maxConfirmed) {
				continue;
			}
			long long Minl = -1, Maxl = -1, Minr = -1, Maxr = -1;
			int children = 4;
			for (int i = 0; i < children; i++) {
				long long start = l + (r - l + 1) * ((1.0l / children) * i);
				long long end = l + (r - l + 1) * ((1.0l / children) * (i + 1)) - 1;
				MinMax(start, end, &Minr, &Maxr);
				if (Minr != -1) {
					if (Maxl != -1) { 
						maxConfirmed = max(maxConfirmed, Minr - Maxl);
					}
					Minl = Minr;
					Maxl = Maxr;
					Q.push({Maxl, Maxr});
				}
			}
		}
		return maxConfirmed;
	}
}

Compilation message

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:43:14: warning: variable 'Minl' set but not used [-Wunused-but-set-variable]
   43 |    long long Minl = -1, Maxl = -1, Minr = -1, Maxr = -1;
      |              ^~~~
# 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 1 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 336 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 1168 KB Output is correct
17 Correct 9 ms 1168 KB Output is correct
18 Correct 7 ms 1104 KB Output is correct
19 Correct 7 ms 1168 KB Output is correct
20 Correct 6 ms 1104 KB Output is correct
21 Correct 31 ms 2968 KB Output is correct
22 Correct 29 ms 3008 KB Output is correct
23 Correct 35 ms 3184 KB Output is correct
24 Correct 29 ms 2936 KB Output is correct
25 Correct 26 ms 3004 KB Output is correct
26 Correct 30 ms 2924 KB Output is correct
27 Correct 35 ms 3020 KB Output is correct
28 Correct 30 ms 3060 KB Output is correct
29 Correct 29 ms 3060 KB Output is correct
30 Correct 24 ms 3032 KB Output is correct
31 Correct 1 ms 208 KB Output is correct
32 Correct 1 ms 208 KB Output is correct
# 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 1 ms 208 KB Output is correct
6 Incorrect 0 ms 208 KB Output isn't correct
7 Correct 0 ms 208 KB Output is correct
8 Incorrect 1 ms 208 KB Output isn't correct
9 Incorrect 0 ms 208 KB Output isn't correct
10 Correct 1 ms 208 KB Output is correct
11 Incorrect 1 ms 336 KB Output isn't correct
12 Incorrect 1 ms 208 KB Output isn't correct
13 Incorrect 1 ms 336 KB Output isn't correct
14 Incorrect 1 ms 336 KB Output isn't correct
15 Correct 1 ms 336 KB Output is correct
16 Incorrect 3 ms 464 KB Output isn't correct
17 Incorrect 3 ms 464 KB Output isn't correct
18 Incorrect 4 ms 464 KB Output isn't correct
19 Incorrect 5 ms 464 KB Output isn't correct
20 Correct 3 ms 464 KB Output is correct
21 Incorrect 17 ms 1228 KB Output isn't correct
22 Incorrect 17 ms 1080 KB Output isn't correct
23 Incorrect 13 ms 968 KB Output isn't correct
24 Incorrect 13 ms 968 KB Output isn't correct
25 Correct 14 ms 1008 KB Output is correct
26 Incorrect 12 ms 1108 KB Output isn't correct
27 Incorrect 13 ms 976 KB Output isn't correct
28 Incorrect 19 ms 1124 KB Output isn't correct
29 Incorrect 19 ms 1016 KB Output isn't correct
30 Correct 8 ms 976 KB Output is correct
31 Correct 0 ms 208 KB Output is correct
32 Correct 0 ms 208 KB Output is correct