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Submission #733970

# Submission time Handle Problem Language Result Execution time Memory
733970 2023-05-01T12:29:29 Z vjudge1 City Mapping (NOI18_citymapping) C++17
57 / 100
 117 ms 8780 KB 
#include "citymapping.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
constexpr ll inf = 1e15;
void find_roads(int N, int Q, int A[], int B[], int W[]) {
	if (Q == 500000) {
		vector<tuple<ll, int, int>> T;
		for (int i = 0; i < N; i++) {
			for (int j = i + 1; j < N; j++) {
				T.emplace_back(get_distance(i + 1, j + 1), i, j);
			}
		}
		sort(T.begin(), T.end());
		vector<int> par(N);
		iota(par.begin(), par.end(), 0);
		function<int(int)> find = [&](int x) {
			return x == par[x] ? x : par[x] = find(par[x]);
		};
		int p = 0;
		for (int i = 0; i < T.size(); i++) {
			auto [z, x, y] = T[i];
			if (find(x) != find(y)) {
				A[p] = x + 1;
				B[p] = y + 1;
				W[p] = z;
				p++;
				par[find(x)] = find(y);
			}
		}
		return;
	}
	if (Q == 12000) {
		int x = -1;
		ll mx = 0;
		for (int i = 1; i < N; i++) {
			ll s = get_distance(1, i + 1);
			if (s > mx) {
				mx = s;
				x = i;
			}
		}
		vector<pair<ll, int>> p(N);
		for (int i = 0; i < N; i++) {
			p[i] = {get_distance(x + 1, i + 1), i};
		}
		sort(p.begin(), p.end());
		for (int i = 0; i < N - 1; i++) {
			A[i] = p[i].second + 1;
			B[i] = p[i + 1].second + 1;
			W[i] = p[i + 1].first - p[i].first;
		}
		return;
	}
}

Compilation message

citymapping.cpp: In function 'void find_roads(int, int, int*, int*, int*)':
citymapping.cpp:21:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::tuple<long long int, int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |   for (int i = 0; i < T.size(); i++) {
      |                   ~~^~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 108 ms 8708 KB Correct: 498501 out of 500000 queries used.
2 Correct 112 ms 8768 KB Correct: 499500 out of 500000 queries used.
3 Correct 117 ms 8688 KB Correct: 492528 out of 500000 queries used.
4 Correct 98 ms 8768 KB Correct: 494515 out of 500000 queries used.
5 Correct 114 ms 8760 KB Correct: 498501 out of 500000 queries used.

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 108 ms 8708 KB Correct: 498501 out of 500000 queries used.
2 Correct 112 ms 8768 KB Correct: 499500 out of 500000 queries used.
3 Correct 117 ms 8688 KB Correct: 492528 out of 500000 queries used.
4 Correct 98 ms 8768 KB Correct: 494515 out of 500000 queries used.
5 Correct 114 ms 8760 KB Correct: 498501 out of 500000 queries used.
6 Correct 88 ms 8752 KB Correct: 495510 out of 500000 queries used.
7 Correct 108 ms 8768 KB Correct: 497503 out of 500000 queries used.
8 Correct 101 ms 8732 KB Correct: 497503 out of 500000 queries used.
9 Correct 81 ms 8780 KB Correct: 495510 out of 500000 queries used.
10 Correct 92 ms 8664 KB Correct: 496506 out of 500000 queries used.

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Correct: 1981 out of 12000 queries used.
2 Correct 1 ms 468 KB Correct: 1985 out of 12000 queries used.
3 Correct 1 ms 468 KB Correct: 1999 out of 12000 queries used.
4 Correct 1 ms 468 KB Correct: 1985 out of 12000 queries used.
5 Correct 1 ms 468 KB Correct: 1981 out of 12000 queries used.

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Correct: 1981 out of 12000 queries used.
2 Correct 1 ms 468 KB Correct: 1985 out of 12000 queries used.
3 Correct 1 ms 468 KB Correct: 1999 out of 12000 queries used.
4 Correct 1 ms 468 KB Correct: 1985 out of 12000 queries used.
5 Correct 1 ms 468 KB Correct: 1981 out of 12000 queries used.
6 Correct 1 ms 468 KB Correct: 1995 out of 12000 queries used.
7 Correct 2 ms 468 KB Correct: 1991 out of 12000 queries used.
8 Correct 1 ms 468 KB Correct: 1999 out of 12000 queries used.
9 Correct 1 ms 468 KB Correct: 1993 out of 12000 queries used.
10 Correct 1 ms 468 KB Correct: 1987 out of 12000 queries used.

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 108 ms 8708 KB Correct: 498501 out of 500000 queries used.
2 Correct 112 ms 8768 KB Correct: 499500 out of 500000 queries used.
3 Correct 117 ms 8688 KB Correct: 492528 out of 500000 queries used.
4 Correct 98 ms 8768 KB Correct: 494515 out of 500000 queries used.
5 Correct 114 ms 8760 KB Correct: 498501 out of 500000 queries used.
6 Correct 88 ms 8752 KB Correct: 495510 out of 500000 queries used.
7 Correct 108 ms 8768 KB Correct: 497503 out of 500000 queries used.
8 Correct 101 ms 8732 KB Correct: 497503 out of 500000 queries used.
9 Correct 81 ms 8780 KB Correct: 495510 out of 500000 queries used.
10 Correct 92 ms 8664 KB Correct: 496506 out of 500000 queries used.
11 Correct 1 ms 468 KB Correct: 1981 out of 12000 queries used.
12 Correct 1 ms 468 KB Correct: 1985 out of 12000 queries used.
13 Correct 1 ms 468 KB Correct: 1999 out of 12000 queries used.
14 Correct 1 ms 468 KB Correct: 1985 out of 12000 queries used.
15 Correct 1 ms 468 KB Correct: 1981 out of 12000 queries used.
16 Correct 1 ms 468 KB Correct: 1995 out of 12000 queries used.
17 Correct 2 ms 468 KB Correct: 1991 out of 12000 queries used.
18 Correct 1 ms 468 KB Correct: 1999 out of 12000 queries used.
19 Correct 1 ms 468 KB Correct: 1993 out of 12000 queries used.
20 Correct 1 ms 468 KB Correct: 1987 out of 12000 queries used.
21 Incorrect 1 ms 468 KB Reported list of edges differ from actual.
22 Halted 0 ms 0 KB -