답안 #882917

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
882917 2023-12-04T06:44:23 Z rastervc 경주 (Race) (IOI11_race) C++17
100 / 100
404 ms 111440 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 4 ms 21340 KB Output is correct
3 Correct 4 ms 21304 KB Output is correct
4 Correct 4 ms 21336 KB Output is correct
5 Correct 4 ms 21344 KB Output is correct
6 Correct 4 ms 21336 KB Output is correct
7 Correct 5 ms 21172 KB Output is correct
8 Correct 4 ms 21340 KB Output is correct
9 Correct 4 ms 21288 KB Output is correct
10 Correct 4 ms 21336 KB Output is correct
11 Correct 4 ms 21336 KB Output is correct
12 Correct 4 ms 21340 KB Output is correct
13 Correct 5 ms 21340 KB Output is correct
14 Correct 4 ms 21340 KB Output is correct
15 Correct 4 ms 21340 KB Output is correct
16 Correct 4 ms 21336 KB Output is correct
17 Correct 4 ms 21340 KB Output is correct
18 Correct 4 ms 21336 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 21340 KB Output is correct
2 Correct 4 ms 21340 KB Output is correct
3 Correct 4 ms 21304 KB Output is correct
4 Correct 4 ms 21336 KB Output is correct
5 Correct 4 ms 21344 KB Output is correct
6 Correct 4 ms 21336 KB Output is correct
7 Correct 5 ms 21172 KB Output is correct
8 Correct 4 ms 21340 KB Output is correct
9 Correct 4 ms 21288 KB Output is correct
10 Correct 4 ms 21336 KB Output is correct
11 Correct 4 ms 21336 KB Output is correct
12 Correct 4 ms 21340 KB Output is correct
13 Correct 5 ms 21340 KB Output is correct
14 Correct 4 ms 21340 KB Output is correct
15 Correct 4 ms 21340 KB Output is correct
16 Correct 4 ms 21336 KB Output is correct
17 Correct 4 ms 21340 KB Output is correct
18 Correct 4 ms 21336 KB Output is correct
19 Correct 4 ms 21084 KB Output is correct
20 Correct 4 ms 21084 KB Output is correct
21 Correct 5 ms 21336 KB Output is correct
22 Correct 5 ms 21632 KB Output is correct
23 Correct 6 ms 21596 KB Output is correct
24 Correct 5 ms 21616 KB Output is correct
25 Correct 7 ms 21596 KB Output is correct
26 Correct 5 ms 21592 KB Output is correct
27 Correct 5 ms 21476 KB Output is correct
28 Correct 6 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 21600 KB Output is correct
32 Correct 6 ms 21452 KB Output is correct
33 Correct 5 ms 21792 KB Output is correct
34 Correct 5 ms 21336 KB Output is correct
35 Correct 5 ms 21340 KB Output is correct
36 Correct 5 ms 21428 KB Output is correct
37 Correct 5 ms 21340 KB Output is correct
38 Correct 5 ms 21340 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 21340 KB Output is correct
2 Correct 4 ms 21340 KB Output is correct
3 Correct 4 ms 21304 KB Output is correct
4 Correct 4 ms 21336 KB Output is correct
5 Correct 4 ms 21344 KB Output is correct
6 Correct 4 ms 21336 KB Output is correct
7 Correct 5 ms 21172 KB Output is correct
8 Correct 4 ms 21340 KB Output is correct
9 Correct 4 ms 21288 KB Output is correct
10 Correct 4 ms 21336 KB Output is correct
11 Correct 4 ms 21336 KB Output is correct
12 Correct 4 ms 21340 KB Output is correct
13 Correct 5 ms 21340 KB Output is correct
14 Correct 4 ms 21340 KB Output is correct
15 Correct 4 ms 21340 KB Output is correct
16 Correct 4 ms 21336 KB Output is correct
17 Correct 4 ms 21340 KB Output is correct
18 Correct 4 ms 21336 KB Output is correct
19 Correct 126 ms 45352 KB Output is correct
20 Correct 103 ms 45392 KB Output is correct
21 Correct 120 ms 45432 KB Output is correct
22 Correct 117 ms 44780 KB Output is correct
23 Correct 149 ms 57560 KB Output is correct
24 Correct 113 ms 47584 KB Output is correct
25 Correct 101 ms 46320 KB Output is correct
26 Correct 51 ms 54380 KB Output is correct
27 Correct 172 ms 56232 KB Output is correct
28 Correct 275 ms 98540 KB Output is correct
29 Correct 284 ms 96596 KB Output is correct
30 Correct 163 ms 56144 KB Output is correct
31 Correct 176 ms 56348 KB Output is correct
32 Correct 240 ms 56276 KB Output is correct
33 Correct 225 ms 61204 KB Output is correct
34 Correct 297 ms 94104 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 21340 KB Output is correct
2 Correct 4 ms 21340 KB Output is correct
3 Correct 4 ms 21304 KB Output is correct
4 Correct 4 ms 21336 KB Output is correct
5 Correct 4 ms 21344 KB Output is correct
6 Correct 4 ms 21336 KB Output is correct
7 Correct 5 ms 21172 KB Output is correct
8 Correct 4 ms 21340 KB Output is correct
9 Correct 4 ms 21288 KB Output is correct
10 Correct 4 ms 21336 KB Output is correct
11 Correct 4 ms 21336 KB Output is correct
12 Correct 4 ms 21340 KB Output is correct
13 Correct 5 ms 21340 KB Output is correct
14 Correct 4 ms 21340 KB Output is correct
15 Correct 4 ms 21340 KB Output is correct
16 Correct 4 ms 21336 KB Output is correct
17 Correct 4 ms 21340 KB Output is correct
18 Correct 4 ms 21336 KB Output is correct
19 Correct 4 ms 21084 KB Output is correct
20 Correct 4 ms 21084 KB Output is correct
21 Correct 5 ms 21336 KB Output is correct
22 Correct 5 ms 21632 KB Output is correct
23 Correct 6 ms 21596 KB Output is correct
24 Correct 5 ms 21616 KB Output is correct
25 Correct 7 ms 21596 KB Output is correct
26 Correct 5 ms 21592 KB Output is correct
27 Correct 5 ms 21476 KB Output is correct
28 Correct 6 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 21600 KB Output is correct
32 Correct 6 ms 21452 KB Output is correct
33 Correct 5 ms 21792 KB Output is correct
34 Correct 5 ms 21336 KB Output is correct
35 Correct 5 ms 21340 KB Output is correct
36 Correct 5 ms 21428 KB Output is correct
37 Correct 5 ms 21340 KB Output is correct
38 Correct 5 ms 21340 KB Output is correct
39 Correct 126 ms 45352 KB Output is correct
40 Correct 103 ms 45392 KB Output is correct
41 Correct 120 ms 45432 KB Output is correct
42 Correct 117 ms 44780 KB Output is correct
43 Correct 149 ms 57560 KB Output is correct
44 Correct 113 ms 47584 KB Output is correct
45 Correct 101 ms 46320 KB Output is correct
46 Correct 51 ms 54380 KB Output is correct
47 Correct 172 ms 56232 KB Output is correct
48 Correct 275 ms 98540 KB Output is correct
49 Correct 284 ms 96596 KB Output is correct
50 Correct 163 ms 56144 KB Output is correct
51 Correct 176 ms 56348 KB Output is correct
52 Correct 240 ms 56276 KB Output is correct
53 Correct 225 ms 61204 KB Output is correct
54 Correct 297 ms 94104 KB Output is correct
55 Correct 16 ms 24412 KB Output is correct
56 Correct 10 ms 23128 KB Output is correct
57 Correct 66 ms 43028 KB Output is correct
58 Correct 42 ms 35532 KB Output is correct
59 Correct 92 ms 60716 KB Output is correct
60 Correct 262 ms 97208 KB Output is correct
61 Correct 190 ms 59732 KB Output is correct
62 Correct 175 ms 56468 KB Output is correct
63 Correct 225 ms 56392 KB Output is correct
64 Correct 404 ms 111440 KB Output is correct
65 Correct 371 ms 109128 KB Output is correct
66 Correct 283 ms 92404 KB Output is correct
67 Correct 154 ms 49476 KB Output is correct
68 Correct 304 ms 72564 KB Output is correct
69 Correct 346 ms 77368 KB Output is correct
70 Correct 291 ms 70476 KB Output is correct