답안 #992414

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
992414 2024-06-04T12:18:05 Z AbodeKu 경주 (Race) (IOI11_race) C++17
100 / 100
364 ms 108624 KB
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<ll, ll> pii;

#define pb push_back

#define f first
#define s second

const int maxn = 2e5 + 1;
vector<pii> adj[maxn];
map<ll, ll> info[maxn];
ll dist[maxn], sum[maxn];  // define these relative to root
int N, K;
ll ret;

void precomp(int u, int p, ll c, int h) {
	info[u][c] = h;
	sum[u] = c;
	dist[u] = h;
	for (auto n : adj[u]) {
		if (p == n.f) { continue; }
		precomp(n.f, u, c + n.s, h + 1);
	}
}

void small_to_large_merge(int u, int p) {
	ll target = K + 2 * sum[u];
	for (auto n : adj[u]) {
		if (n.f == p) { continue; }
		small_to_large_merge(n.f, u);
		if (info[n.f].size() > info[u].size()) { swap(info[n.f], info[u]); }
		for (auto i : info[n.f]) {
			if (info[u].find(target - i.f) != info[u].end()) {
				ret = min(ret, info[u][target - i.f] + i.s - 2 * dist[u]);
			}
		}
		for (auto i : info[n.f]) {
			if (info[u].find(i.f) == info[u].end()) {
				info[u].insert(i);
			} else {
				info[u][i.f] = min(info[u][i.f], i.s);
			}
		}
	}
}

int best_path(int n, int k, int edges[][2], int weights[]) {
	if (k == 1) { return 0; }
	N = n;
	K = k;
	ret = INT_MAX;
	for (int i = 0; i < n - 1; i++) {
		int u = edges[i][0];
		int v = edges[i][1];
		adj[u].pb(pii(v, weights[i]));
		adj[v].pb(pii(u, weights[i]));
	}
	precomp(0, -1, 0, 0);
	small_to_large_merge(0, -1);
	return ret == INT_MAX ? -1 : ret;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 21340 KB Output is correct
2 Correct 3 ms 21084 KB Output is correct
3 Correct 3 ms 21080 KB Output is correct
4 Correct 3 ms 21296 KB Output is correct
5 Correct 3 ms 21084 KB Output is correct
6 Correct 3 ms 21340 KB Output is correct
7 Correct 3 ms 21340 KB Output is correct
8 Correct 3 ms 21340 KB Output is correct
9 Correct 3 ms 21084 KB Output is correct
10 Correct 3 ms 21264 KB Output is correct
11 Correct 3 ms 21084 KB Output is correct
12 Correct 3 ms 21336 KB Output is correct
13 Correct 3 ms 21084 KB Output is correct
14 Correct 3 ms 21308 KB Output is correct
15 Correct 3 ms 21084 KB Output is correct
16 Correct 3 ms 21340 KB Output is correct
17 Correct 3 ms 21340 KB Output is correct
18 Correct 3 ms 21084 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 21340 KB Output is correct
2 Correct 3 ms 21084 KB Output is correct
3 Correct 3 ms 21080 KB Output is correct
4 Correct 3 ms 21296 KB Output is correct
5 Correct 3 ms 21084 KB Output is correct
6 Correct 3 ms 21340 KB Output is correct
7 Correct 3 ms 21340 KB Output is correct
8 Correct 3 ms 21340 KB Output is correct
9 Correct 3 ms 21084 KB Output is correct
10 Correct 3 ms 21264 KB Output is correct
11 Correct 3 ms 21084 KB Output is correct
12 Correct 3 ms 21336 KB Output is correct
13 Correct 3 ms 21084 KB Output is correct
14 Correct 3 ms 21308 KB Output is correct
15 Correct 3 ms 21084 KB Output is correct
16 Correct 3 ms 21340 KB Output is correct
17 Correct 3 ms 21340 KB Output is correct
18 Correct 3 ms 21084 KB Output is correct
19 Correct 3 ms 21088 KB Output is correct
20 Correct 3 ms 21088 KB Output is correct
21 Correct 4 ms 21336 KB Output is correct
22 Correct 4 ms 21596 KB Output is correct
23 Correct 3 ms 21848 KB Output is correct
24 Correct 4 ms 21596 KB Output is correct
25 Correct 4 ms 21600 KB Output is correct
26 Correct 4 ms 21596 KB Output is correct
27 Correct 3 ms 21340 KB Output is correct
28 Correct 5 ms 21596 KB Output is correct
29 Correct 5 ms 21596 KB Output is correct
30 Correct 4 ms 21596 KB Output is correct
31 Correct 4 ms 21596 KB Output is correct
32 Correct 4 ms 21536 KB Output is correct
33 Correct 4 ms 21596 KB Output is correct
34 Correct 4 ms 21340 KB Output is correct
35 Correct 4 ms 21340 KB Output is correct
36 Correct 4 ms 21340 KB Output is correct
37 Correct 4 ms 21340 KB Output is correct
38 Correct 3 ms 21340 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 21340 KB Output is correct
2 Correct 3 ms 21084 KB Output is correct
3 Correct 3 ms 21080 KB Output is correct
4 Correct 3 ms 21296 KB Output is correct
5 Correct 3 ms 21084 KB Output is correct
6 Correct 3 ms 21340 KB Output is correct
7 Correct 3 ms 21340 KB Output is correct
8 Correct 3 ms 21340 KB Output is correct
9 Correct 3 ms 21084 KB Output is correct
10 Correct 3 ms 21264 KB Output is correct
11 Correct 3 ms 21084 KB Output is correct
12 Correct 3 ms 21336 KB Output is correct
13 Correct 3 ms 21084 KB Output is correct
14 Correct 3 ms 21308 KB Output is correct
15 Correct 3 ms 21084 KB Output is correct
16 Correct 3 ms 21340 KB Output is correct
17 Correct 3 ms 21340 KB Output is correct
18 Correct 3 ms 21084 KB Output is correct
19 Correct 91 ms 44164 KB Output is correct
20 Correct 86 ms 45136 KB Output is correct
21 Correct 83 ms 44512 KB Output is correct
22 Correct 90 ms 44840 KB Output is correct
23 Correct 128 ms 57676 KB Output is correct
24 Correct 88 ms 47696 KB Output is correct
25 Correct 73 ms 46160 KB Output is correct
26 Correct 49 ms 53912 KB Output is correct
27 Correct 150 ms 54864 KB Output is correct
28 Correct 225 ms 97108 KB Output is correct
29 Correct 233 ms 95824 KB Output is correct
30 Correct 146 ms 55632 KB Output is correct
31 Correct 146 ms 55380 KB Output is correct
32 Correct 192 ms 55448 KB Output is correct
33 Correct 166 ms 60500 KB Output is correct
34 Correct 257 ms 92752 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 21340 KB Output is correct
2 Correct 3 ms 21084 KB Output is correct
3 Correct 3 ms 21080 KB Output is correct
4 Correct 3 ms 21296 KB Output is correct
5 Correct 3 ms 21084 KB Output is correct
6 Correct 3 ms 21340 KB Output is correct
7 Correct 3 ms 21340 KB Output is correct
8 Correct 3 ms 21340 KB Output is correct
9 Correct 3 ms 21084 KB Output is correct
10 Correct 3 ms 21264 KB Output is correct
11 Correct 3 ms 21084 KB Output is correct
12 Correct 3 ms 21336 KB Output is correct
13 Correct 3 ms 21084 KB Output is correct
14 Correct 3 ms 21308 KB Output is correct
15 Correct 3 ms 21084 KB Output is correct
16 Correct 3 ms 21340 KB Output is correct
17 Correct 3 ms 21340 KB Output is correct
18 Correct 3 ms 21084 KB Output is correct
19 Correct 3 ms 21088 KB Output is correct
20 Correct 3 ms 21088 KB Output is correct
21 Correct 4 ms 21336 KB Output is correct
22 Correct 4 ms 21596 KB Output is correct
23 Correct 3 ms 21848 KB Output is correct
24 Correct 4 ms 21596 KB Output is correct
25 Correct 4 ms 21600 KB Output is correct
26 Correct 4 ms 21596 KB Output is correct
27 Correct 3 ms 21340 KB Output is correct
28 Correct 5 ms 21596 KB Output is correct
29 Correct 5 ms 21596 KB Output is correct
30 Correct 4 ms 21596 KB Output is correct
31 Correct 4 ms 21596 KB Output is correct
32 Correct 4 ms 21536 KB Output is correct
33 Correct 4 ms 21596 KB Output is correct
34 Correct 4 ms 21340 KB Output is correct
35 Correct 4 ms 21340 KB Output is correct
36 Correct 4 ms 21340 KB Output is correct
37 Correct 4 ms 21340 KB Output is correct
38 Correct 3 ms 21340 KB Output is correct
39 Correct 91 ms 44164 KB Output is correct
40 Correct 86 ms 45136 KB Output is correct
41 Correct 83 ms 44512 KB Output is correct
42 Correct 90 ms 44840 KB Output is correct
43 Correct 128 ms 57676 KB Output is correct
44 Correct 88 ms 47696 KB Output is correct
45 Correct 73 ms 46160 KB Output is correct
46 Correct 49 ms 53912 KB Output is correct
47 Correct 150 ms 54864 KB Output is correct
48 Correct 225 ms 97108 KB Output is correct
49 Correct 233 ms 95824 KB Output is correct
50 Correct 146 ms 55632 KB Output is correct
51 Correct 146 ms 55380 KB Output is correct
52 Correct 192 ms 55448 KB Output is correct
53 Correct 166 ms 60500 KB Output is correct
54 Correct 257 ms 92752 KB Output is correct
55 Correct 12 ms 24408 KB Output is correct
56 Correct 8 ms 22872 KB Output is correct
57 Correct 45 ms 41820 KB Output is correct
58 Correct 35 ms 35532 KB Output is correct
59 Correct 72 ms 60228 KB Output is correct
60 Correct 212 ms 95828 KB Output is correct
61 Correct 184 ms 58196 KB Output is correct
62 Correct 141 ms 55380 KB Output is correct
63 Correct 179 ms 55384 KB Output is correct
64 Correct 364 ms 108624 KB Output is correct
65 Correct 346 ms 108492 KB Output is correct
66 Correct 234 ms 89424 KB Output is correct
67 Correct 110 ms 49644 KB Output is correct
68 Correct 262 ms 71504 KB Output is correct
69 Correct 305 ms 73812 KB Output is correct
70 Correct 253 ms 69716 KB Output is correct