답안 #24185

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
24185 2017-06-01T10:31:29 Z Bruteforceman 경주 (Race) (IOI11_race) C++11
100 / 100
603 ms 70180 KB
#include "race.h"
#include "bits/stdc++.h"
using namespace std;

vector < pair <int, int> > g[200010];
int ans;
int len;

void dfs(int x, int par, map <long long, int> &f, long long &add, int &extra) {
	add = 0;
	extra = 0;
	f[0] = 0;

	for(auto i : g[x]) {
		if(i.first == par) continue;

		map <long long, int> t;
		long long plus;
		int rem;

		dfs(i.first, x, t, plus, rem);
		plus += i.second;
		rem += 1;

		if(t.size() > f.size()) {
			f.swap(t);
			swap(add, plus);
			swap(extra, rem);
		}
		for(auto i : t) {
			if(f.find(len - i.first - plus - add) != f.end()) {
				ans = min(ans, i.second + f[len - i.first - plus - add] + extra + rem);
			}
		}
		plus -= add;
		rem -= extra;
		for(auto i : t) {
			long long p = i.first + plus;
			if(f.find(p) == f.end()) {
				f[p] = i.second + rem;
			} else {
				f[p] = min(f[p], i.second + rem);
			}
		}
	}
}

int best_path(int N, int K, int H[][2], int L[])
{
	ans = INT_MAX;
	len = K;
	for(int i = 0; i <= N; i++) g[i].clear();
	for(int i = 0; i < N-1; i++) {
		int p = H[i][0];
		int q = H[i][1];
		int r = L[i];
		g[p].push_back(make_pair(q, r));
		g[q].push_back(make_pair(p, r));
	}
	map <long long, int> f;
	long long add;
	int extra;
	dfs(0, -1, f, add, extra);
	return ans == INT_MAX ? -1 : ans;
}

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5080 KB Output is correct
2 Correct 6 ms 5152 KB Output is correct
3 Correct 5 ms 5228 KB Output is correct
4 Correct 6 ms 5228 KB Output is correct
5 Correct 6 ms 5380 KB Output is correct
6 Correct 7 ms 5380 KB Output is correct
7 Correct 7 ms 5380 KB Output is correct
8 Correct 5 ms 5380 KB Output is correct
9 Correct 6 ms 5380 KB Output is correct
10 Correct 5 ms 5380 KB Output is correct
11 Correct 6 ms 5380 KB Output is correct
12 Correct 5 ms 5380 KB Output is correct
13 Correct 6 ms 5380 KB Output is correct
14 Correct 7 ms 5380 KB Output is correct
15 Correct 7 ms 5380 KB Output is correct
16 Correct 6 ms 5380 KB Output is correct
17 Correct 6 ms 5380 KB Output is correct
18 Correct 7 ms 5380 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5080 KB Output is correct
2 Correct 6 ms 5152 KB Output is correct
3 Correct 5 ms 5228 KB Output is correct
4 Correct 6 ms 5228 KB Output is correct
5 Correct 6 ms 5380 KB Output is correct
6 Correct 7 ms 5380 KB Output is correct
7 Correct 7 ms 5380 KB Output is correct
8 Correct 5 ms 5380 KB Output is correct
9 Correct 6 ms 5380 KB Output is correct
10 Correct 5 ms 5380 KB Output is correct
11 Correct 6 ms 5380 KB Output is correct
12 Correct 5 ms 5380 KB Output is correct
13 Correct 6 ms 5380 KB Output is correct
14 Correct 7 ms 5380 KB Output is correct
15 Correct 7 ms 5380 KB Output is correct
16 Correct 6 ms 5380 KB Output is correct
17 Correct 6 ms 5380 KB Output is correct
18 Correct 7 ms 5380 KB Output is correct
19 Correct 7 ms 5380 KB Output is correct
20 Correct 7 ms 5380 KB Output is correct
21 Correct 7 ms 5380 KB Output is correct
22 Correct 10 ms 5380 KB Output is correct
23 Correct 7 ms 5380 KB Output is correct
24 Correct 7 ms 5380 KB Output is correct
25 Correct 7 ms 5380 KB Output is correct
26 Correct 9 ms 5380 KB Output is correct
27 Correct 6 ms 5392 KB Output is correct
28 Correct 9 ms 5392 KB Output is correct
29 Correct 8 ms 5392 KB Output is correct
30 Correct 7 ms 5392 KB Output is correct
31 Correct 8 ms 5392 KB Output is correct
32 Correct 8 ms 5392 KB Output is correct
33 Correct 9 ms 5392 KB Output is correct
34 Correct 7 ms 5392 KB Output is correct
35 Correct 7 ms 5392 KB Output is correct
36 Correct 7 ms 5480 KB Output is correct
37 Correct 6 ms 5480 KB Output is correct
38 Correct 6 ms 5480 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5080 KB Output is correct
2 Correct 6 ms 5152 KB Output is correct
3 Correct 5 ms 5228 KB Output is correct
4 Correct 6 ms 5228 KB Output is correct
5 Correct 6 ms 5380 KB Output is correct
6 Correct 7 ms 5380 KB Output is correct
7 Correct 7 ms 5380 KB Output is correct
8 Correct 5 ms 5380 KB Output is correct
9 Correct 6 ms 5380 KB Output is correct
10 Correct 5 ms 5380 KB Output is correct
11 Correct 6 ms 5380 KB Output is correct
12 Correct 5 ms 5380 KB Output is correct
13 Correct 6 ms 5380 KB Output is correct
14 Correct 7 ms 5380 KB Output is correct
15 Correct 7 ms 5380 KB Output is correct
16 Correct 6 ms 5380 KB Output is correct
17 Correct 6 ms 5380 KB Output is correct
18 Correct 7 ms 5380 KB Output is correct
19 Correct 142 ms 10212 KB Output is correct
20 Correct 198 ms 10316 KB Output is correct
21 Correct 133 ms 10352 KB Output is correct
22 Correct 174 ms 10352 KB Output is correct
23 Correct 187 ms 10632 KB Output is correct
24 Correct 182 ms 10632 KB Output is correct
25 Correct 104 ms 24804 KB Output is correct
26 Correct 89 ms 37732 KB Output is correct
27 Correct 268 ms 37732 KB Output is correct
28 Correct 474 ms 70180 KB Output is correct
29 Correct 458 ms 70180 KB Output is correct
30 Correct 274 ms 70180 KB Output is correct
31 Correct 269 ms 70180 KB Output is correct
32 Correct 252 ms 70180 KB Output is correct
33 Correct 239 ms 70180 KB Output is correct
34 Correct 482 ms 70180 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5080 KB Output is correct
2 Correct 6 ms 5152 KB Output is correct
3 Correct 5 ms 5228 KB Output is correct
4 Correct 6 ms 5228 KB Output is correct
5 Correct 6 ms 5380 KB Output is correct
6 Correct 7 ms 5380 KB Output is correct
7 Correct 7 ms 5380 KB Output is correct
8 Correct 5 ms 5380 KB Output is correct
9 Correct 6 ms 5380 KB Output is correct
10 Correct 5 ms 5380 KB Output is correct
11 Correct 6 ms 5380 KB Output is correct
12 Correct 5 ms 5380 KB Output is correct
13 Correct 6 ms 5380 KB Output is correct
14 Correct 7 ms 5380 KB Output is correct
15 Correct 7 ms 5380 KB Output is correct
16 Correct 6 ms 5380 KB Output is correct
17 Correct 6 ms 5380 KB Output is correct
18 Correct 7 ms 5380 KB Output is correct
19 Correct 7 ms 5380 KB Output is correct
20 Correct 7 ms 5380 KB Output is correct
21 Correct 7 ms 5380 KB Output is correct
22 Correct 10 ms 5380 KB Output is correct
23 Correct 7 ms 5380 KB Output is correct
24 Correct 7 ms 5380 KB Output is correct
25 Correct 7 ms 5380 KB Output is correct
26 Correct 9 ms 5380 KB Output is correct
27 Correct 6 ms 5392 KB Output is correct
28 Correct 9 ms 5392 KB Output is correct
29 Correct 8 ms 5392 KB Output is correct
30 Correct 7 ms 5392 KB Output is correct
31 Correct 8 ms 5392 KB Output is correct
32 Correct 8 ms 5392 KB Output is correct
33 Correct 9 ms 5392 KB Output is correct
34 Correct 7 ms 5392 KB Output is correct
35 Correct 7 ms 5392 KB Output is correct
36 Correct 7 ms 5480 KB Output is correct
37 Correct 6 ms 5480 KB Output is correct
38 Correct 6 ms 5480 KB Output is correct
39 Correct 142 ms 10212 KB Output is correct
40 Correct 198 ms 10316 KB Output is correct
41 Correct 133 ms 10352 KB Output is correct
42 Correct 174 ms 10352 KB Output is correct
43 Correct 187 ms 10632 KB Output is correct
44 Correct 182 ms 10632 KB Output is correct
45 Correct 104 ms 24804 KB Output is correct
46 Correct 89 ms 37732 KB Output is correct
47 Correct 268 ms 37732 KB Output is correct
48 Correct 474 ms 70180 KB Output is correct
49 Correct 458 ms 70180 KB Output is correct
50 Correct 274 ms 70180 KB Output is correct
51 Correct 269 ms 70180 KB Output is correct
52 Correct 252 ms 70180 KB Output is correct
53 Correct 239 ms 70180 KB Output is correct
54 Correct 482 ms 70180 KB Output is correct
55 Correct 22 ms 70180 KB Output is correct
56 Correct 15 ms 70180 KB Output is correct
57 Correct 91 ms 70180 KB Output is correct
58 Correct 64 ms 70180 KB Output is correct
59 Correct 145 ms 70180 KB Output is correct
60 Correct 408 ms 70180 KB Output is correct
61 Correct 296 ms 70180 KB Output is correct
62 Correct 242 ms 70180 KB Output is correct
63 Correct 280 ms 70180 KB Output is correct
64 Correct 550 ms 70180 KB Output is correct
65 Correct 603 ms 70180 KB Output is correct
66 Correct 451 ms 70180 KB Output is correct
67 Correct 175 ms 70180 KB Output is correct
68 Correct 469 ms 70180 KB Output is correct
69 Correct 497 ms 70180 KB Output is correct
70 Correct 461 ms 70180 KB Output is correct