답안 #964948

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
964948 2024-04-17T18:30:41 Z Younis_Dwai 경주 (Race) (IOI11_race) C++14
100 / 100
415 ms 108756 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 5 ms 21336 KB Output is correct
2 Correct 5 ms 21340 KB Output is correct
3 Correct 4 ms 21340 KB Output is correct
4 Correct 5 ms 21084 KB Output is correct
5 Correct 5 ms 21084 KB Output is correct
6 Correct 4 ms 21084 KB Output is correct
7 Correct 4 ms 21340 KB Output is correct
8 Correct 4 ms 21340 KB Output is correct
9 Correct 5 ms 21336 KB Output is correct
10 Correct 5 ms 21340 KB Output is correct
11 Correct 4 ms 21084 KB Output is correct
12 Correct 4 ms 21080 KB Output is correct
13 Correct 4 ms 21084 KB Output is correct
14 Correct 5 ms 21340 KB Output is correct
15 Correct 5 ms 21080 KB Output is correct
16 Correct 4 ms 21340 KB Output is correct
17 Correct 4 ms 21084 KB Output is correct
18 Correct 4 ms 21084 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 21336 KB Output is correct
2 Correct 5 ms 21340 KB Output is correct
3 Correct 4 ms 21340 KB Output is correct
4 Correct 5 ms 21084 KB Output is correct
5 Correct 5 ms 21084 KB Output is correct
6 Correct 4 ms 21084 KB Output is correct
7 Correct 4 ms 21340 KB Output is correct
8 Correct 4 ms 21340 KB Output is correct
9 Correct 5 ms 21336 KB Output is correct
10 Correct 5 ms 21340 KB Output is correct
11 Correct 4 ms 21084 KB Output is correct
12 Correct 4 ms 21080 KB Output is correct
13 Correct 4 ms 21084 KB Output is correct
14 Correct 5 ms 21340 KB Output is correct
15 Correct 5 ms 21080 KB Output is correct
16 Correct 4 ms 21340 KB Output is correct
17 Correct 4 ms 21084 KB Output is correct
18 Correct 4 ms 21084 KB Output is correct
19 Correct 5 ms 21084 KB Output is correct
20 Correct 5 ms 21336 KB Output is correct
21 Correct 5 ms 21344 KB Output is correct
22 Correct 7 ms 21596 KB Output is correct
23 Correct 6 ms 21592 KB Output is correct
24 Correct 5 ms 21592 KB Output is correct
25 Correct 5 ms 21596 KB Output is correct
26 Correct 6 ms 21596 KB Output is correct
27 Correct 5 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 5 ms 21596 KB Output is correct
31 Correct 5 ms 21604 KB Output is correct
32 Correct 7 ms 21348 KB Output is correct
33 Correct 6 ms 21632 KB Output is correct
34 Correct 5 ms 21340 KB Output is correct
35 Correct 5 ms 21564 KB Output is correct
36 Correct 5 ms 21336 KB Output is correct
37 Correct 5 ms 21336 KB Output is correct
38 Correct 5 ms 21340 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 21336 KB Output is correct
2 Correct 5 ms 21340 KB Output is correct
3 Correct 4 ms 21340 KB Output is correct
4 Correct 5 ms 21084 KB Output is correct
5 Correct 5 ms 21084 KB Output is correct
6 Correct 4 ms 21084 KB Output is correct
7 Correct 4 ms 21340 KB Output is correct
8 Correct 4 ms 21340 KB Output is correct
9 Correct 5 ms 21336 KB Output is correct
10 Correct 5 ms 21340 KB Output is correct
11 Correct 4 ms 21084 KB Output is correct
12 Correct 4 ms 21080 KB Output is correct
13 Correct 4 ms 21084 KB Output is correct
14 Correct 5 ms 21340 KB Output is correct
15 Correct 5 ms 21080 KB Output is correct
16 Correct 4 ms 21340 KB Output is correct
17 Correct 4 ms 21084 KB Output is correct
18 Correct 4 ms 21084 KB Output is correct
19 Correct 112 ms 44280 KB Output is correct
20 Correct 144 ms 45220 KB Output is correct
21 Correct 110 ms 44500 KB Output is correct
22 Correct 118 ms 44848 KB Output is correct
23 Correct 147 ms 57804 KB Output is correct
24 Correct 110 ms 47628 KB Output is correct
25 Correct 106 ms 46248 KB Output is correct
26 Correct 54 ms 54096 KB Output is correct
27 Correct 171 ms 54864 KB Output is correct
28 Correct 301 ms 97052 KB Output is correct
29 Correct 276 ms 95456 KB Output is correct
30 Correct 188 ms 55288 KB Output is correct
31 Correct 205 ms 55396 KB Output is correct
32 Correct 258 ms 55496 KB Output is correct
33 Correct 272 ms 60544 KB Output is correct
34 Correct 307 ms 92756 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 21336 KB Output is correct
2 Correct 5 ms 21340 KB Output is correct
3 Correct 4 ms 21340 KB Output is correct
4 Correct 5 ms 21084 KB Output is correct
5 Correct 5 ms 21084 KB Output is correct
6 Correct 4 ms 21084 KB Output is correct
7 Correct 4 ms 21340 KB Output is correct
8 Correct 4 ms 21340 KB Output is correct
9 Correct 5 ms 21336 KB Output is correct
10 Correct 5 ms 21340 KB Output is correct
11 Correct 4 ms 21084 KB Output is correct
12 Correct 4 ms 21080 KB Output is correct
13 Correct 4 ms 21084 KB Output is correct
14 Correct 5 ms 21340 KB Output is correct
15 Correct 5 ms 21080 KB Output is correct
16 Correct 4 ms 21340 KB Output is correct
17 Correct 4 ms 21084 KB Output is correct
18 Correct 4 ms 21084 KB Output is correct
19 Correct 5 ms 21084 KB Output is correct
20 Correct 5 ms 21336 KB Output is correct
21 Correct 5 ms 21344 KB Output is correct
22 Correct 7 ms 21596 KB Output is correct
23 Correct 6 ms 21592 KB Output is correct
24 Correct 5 ms 21592 KB Output is correct
25 Correct 5 ms 21596 KB Output is correct
26 Correct 6 ms 21596 KB Output is correct
27 Correct 5 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 5 ms 21596 KB Output is correct
31 Correct 5 ms 21604 KB Output is correct
32 Correct 7 ms 21348 KB Output is correct
33 Correct 6 ms 21632 KB Output is correct
34 Correct 5 ms 21340 KB Output is correct
35 Correct 5 ms 21564 KB Output is correct
36 Correct 5 ms 21336 KB Output is correct
37 Correct 5 ms 21336 KB Output is correct
38 Correct 5 ms 21340 KB Output is correct
39 Correct 112 ms 44280 KB Output is correct
40 Correct 144 ms 45220 KB Output is correct
41 Correct 110 ms 44500 KB Output is correct
42 Correct 118 ms 44848 KB Output is correct
43 Correct 147 ms 57804 KB Output is correct
44 Correct 110 ms 47628 KB Output is correct
45 Correct 106 ms 46248 KB Output is correct
46 Correct 54 ms 54096 KB Output is correct
47 Correct 171 ms 54864 KB Output is correct
48 Correct 301 ms 97052 KB Output is correct
49 Correct 276 ms 95456 KB Output is correct
50 Correct 188 ms 55288 KB Output is correct
51 Correct 205 ms 55396 KB Output is correct
52 Correct 258 ms 55496 KB Output is correct
53 Correct 272 ms 60544 KB Output is correct
54 Correct 307 ms 92756 KB Output is correct
55 Correct 18 ms 24412 KB Output is correct
56 Correct 10 ms 22876 KB Output is correct
57 Correct 62 ms 42064 KB Output is correct
58 Correct 43 ms 35432 KB Output is correct
59 Correct 104 ms 60280 KB Output is correct
60 Correct 280 ms 96024 KB Output is correct
61 Correct 211 ms 58068 KB Output is correct
62 Correct 161 ms 55380 KB Output is correct
63 Correct 248 ms 55380 KB Output is correct
64 Correct 407 ms 108560 KB Output is correct
65 Correct 415 ms 108756 KB Output is correct
66 Correct 294 ms 89260 KB Output is correct
67 Correct 189 ms 49916 KB Output is correct
68 Correct 337 ms 71356 KB Output is correct
69 Correct 362 ms 73824 KB Output is correct
70 Correct 333 ms 69752 KB Output is correct