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Submission #733943

# Submission time Handle Problem Language Result Execution time Memory
733943 2023-05-01T12:18:03 Z vjudge1 City Mapping (NOI18_citymapping) C++17
57 / 100
 11 ms 724 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[]) {
    int r = -1;
    ll mx = 0;
    for (int i = 1; i < N; i++) {
		assert(Q--);
		ll s = get_distance(1, i + 1);
		if (s > mx) {
			mx = s;
			r = i;
		}
	}
	vector<ll> dis(N);
	for (int i = 0; i < N; i++) {
		assert(Q--);
		dis[i] = i == r ? 0 : get_distance(r + 1, i + 1);
	}
	vector<int> p(N);
	iota(p.begin(), p.end(), 0);
	sort(p.begin(), p.end(), [&](int i, int j) {
		return dis[i] < dis[j];
	});
	vector<vector<int>> d(N);
	d[0].push_back(r);
	for (int i = 1; i < N; i++) {
		int v = p[i];
		vector<bool> f(N);
		int lo = 0, hi = N - 1;
		while (lo < hi) {
			int mi = (lo + hi + 1) / 2;
			bool ok = 0;
			for (int x : d[mi]) {
				assert(Q--);
				if (dis[v] - dis[x] == get_distance(x + 1, v + 1)) {
					f[x] = 1;
					ok = 1;
				}
			}
			if (ok) {
				lo = mi;
			} else {
				hi = mi - 1;
			}
		}
		int u = -1;
		for (int x : d[lo]) {
			if (f[x]) {
				u = x;
			}
		}
		if (u == -1) {
			for (int x : d[lo]) {
				assert(Q--);
				if (dis[v] - dis[x] == get_distance(x + 1, v + 1)) {
					u = x;
					break;
				}
			}
		}
		A[i - 1] = u + 1;
		B[i - 1] = v + 1;
		W[i - 1] = dis[v] - dis[u];
		d[lo + 1].push_back(v);
	}
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Correct: 7028 out of 500000 queries used.
2 Correct 2 ms 468 KB Correct: 11582 out of 500000 queries used.
3 Correct 10 ms 468 KB Correct: 182922 out of 500000 queries used.
4 Correct 11 ms 480 KB Correct: 221969 out of 500000 queries used.
5 Correct 6 ms 468 KB Correct: 71533 out of 500000 queries used.

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Correct: 7028 out of 500000 queries used.
2 Correct 2 ms 468 KB Correct: 11582 out of 500000 queries used.
3 Correct 10 ms 468 KB Correct: 182922 out of 500000 queries used.
4 Correct 11 ms 480 KB Correct: 221969 out of 500000 queries used.
5 Correct 6 ms 468 KB Correct: 71533 out of 500000 queries used.
6 Correct 2 ms 468 KB Correct: 7009 out of 500000 queries used.
7 Correct 2 ms 468 KB Correct: 11611 out of 500000 queries used.
8 Correct 10 ms 468 KB Correct: 179877 out of 500000 queries used.
9 Correct 9 ms 468 KB Correct: 187367 out of 500000 queries used.
10 Correct 6 ms 468 KB Correct: 66374 out of 500000 queries used.

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Correct: 6977 out of 12000 queries used.
2 Correct 2 ms 468 KB Correct: 6989 out of 12000 queries used.
3 Correct 2 ms 468 KB Correct: 7033 out of 12000 queries used.
4 Correct 2 ms 468 KB Correct: 6989 out of 12000 queries used.
5 Correct 2 ms 468 KB Correct: 6977 out of 12000 queries used.

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Correct: 6977 out of 12000 queries used.
2 Correct 2 ms 468 KB Correct: 6989 out of 12000 queries used.
3 Correct 2 ms 468 KB Correct: 7033 out of 12000 queries used.
4 Correct 2 ms 468 KB Correct: 6989 out of 12000 queries used.
5 Correct 2 ms 468 KB Correct: 6977 out of 12000 queries used.
6 Correct 2 ms 468 KB Correct: 7022 out of 12000 queries used.
7 Correct 2 ms 468 KB Correct: 7009 out of 12000 queries used.
8 Correct 2 ms 516 KB Correct: 7033 out of 12000 queries used.
9 Correct 2 ms 468 KB Correct: 7016 out of 12000 queries used.
10 Correct 2 ms 464 KB Correct: 6996 out of 12000 queries used.

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Correct: 7028 out of 500000 queries used.
2 Correct 2 ms 468 KB Correct: 11582 out of 500000 queries used.
3 Correct 10 ms 468 KB Correct: 182922 out of 500000 queries used.
4 Correct 11 ms 480 KB Correct: 221969 out of 500000 queries used.
5 Correct 6 ms 468 KB Correct: 71533 out of 500000 queries used.
6 Correct 2 ms 468 KB Correct: 7009 out of 500000 queries used.
7 Correct 2 ms 468 KB Correct: 11611 out of 500000 queries used.
8 Correct 10 ms 468 KB Correct: 179877 out of 500000 queries used.
9 Correct 9 ms 468 KB Correct: 187367 out of 500000 queries used.
10 Correct 6 ms 468 KB Correct: 66374 out of 500000 queries used.
11 Correct 2 ms 468 KB Correct: 6977 out of 12000 queries used.
12 Correct 2 ms 468 KB Correct: 6989 out of 12000 queries used.
13 Correct 2 ms 468 KB Correct: 7033 out of 12000 queries used.
14 Correct 2 ms 468 KB Correct: 6989 out of 12000 queries used.
15 Correct 2 ms 468 KB Correct: 6977 out of 12000 queries used.
16 Correct 2 ms 468 KB Correct: 7022 out of 12000 queries used.
17 Correct 2 ms 468 KB Correct: 7009 out of 12000 queries used.
18 Correct 2 ms 516 KB Correct: 7033 out of 12000 queries used.
19 Correct 2 ms 468 KB Correct: 7016 out of 12000 queries used.
20 Correct 2 ms 464 KB Correct: 6996 out of 12000 queries used.
21 Correct 2 ms 556 KB Correct: 7009 out of 25000 queries used.
22 Correct 3 ms 468 KB Correct: 10929 out of 25000 queries used.
23 Correct 2 ms 468 KB Correct: 10695 out of 25000 queries used.
24 Correct 2 ms 472 KB Correct: 11061 out of 25000 queries used.
25 Runtime error 3 ms 724 KB Execution killed with signal 6
26 Halted 0 ms 0 KB -