Submission #28930

# Submission time Handle Problem Language Result Execution time Memory
28930 2017-07-18T00:14:24 Z h0ngjun7 Race (IOI11_race) C++14
100 / 100
518 ms 66484 KB
#include "race.h"
#include <vector>
#include <algorithm>
#include <unordered_map>
using namespace std;

const int MAXN = 200005;
struct EDGE { int x, w; };
int N, K, ans = -1;
vector <EDGE> v[MAXN];

void f(int x, int par, unordered_map <int, int> &d, int &L, int &W) {
	d[0] = 0;
	for (auto &y : v[x]) {
		if (y.x == par) continue;
		unordered_map <int, int> d2;
		int L2 = 0, W2 = 0;
		f(y.x, x, d2, L2, W2);
		L2++; W2 += y.w;
		if (d.size() < d2.size()) {
			d.swap(d2);
			swap(L, L2);
			swap(W, W2);
		}
		for (auto &t : d2) {
			if (d.count(K - (t.first + W2 + W))) {
				if (ans == -1 || ans > d[K - (t.first + W2 + W)] + t.second + L + L2)
					ans = d[K - (t.first + W2 + W)] + t.second + L + L2;
			}
		}
		for (auto &t : d2) {
			if (t.first + W2 > K) continue;
			if (t.first + W2 == K) {
				if (ans == -1 || ans > t.second + L2)
					ans = t.second + L2;
			}
			if (d.count(t.first + W2 - W)) d[t.first + W2 - W] = min(d[t.first + W2 - W], t.second + L2 - L);
			else d[t.first + W2 - W] = t.second + L2 - L;
		}
	}
}

int best_path(int _N, int _K, int H[][2], int L[]) {
	N = _N, K = _K;
	for (int i = 0; i < N - 1; i++) {
		v[H[i][0]].push_back({ H[i][1], L[i] });
		v[H[i][1]].push_back({ H[i][0], L[i] });
	}
	unordered_map <int, int> d;
	int A = 0, B = 0;
	f(0, -1, d, A, B);
	return ans;
}
# Verdict Execution time Memory Grader output
1 Correct 5 ms 4984 KB Output is correct
2 Correct 6 ms 5092 KB Output is correct
3 Correct 5 ms 5092 KB Output is correct
4 Correct 5 ms 5144 KB Output is correct
5 Correct 5 ms 5144 KB Output is correct
6 Correct 6 ms 5196 KB Output is correct
7 Correct 5 ms 5244 KB Output is correct
8 Correct 6 ms 5400 KB Output is correct
9 Correct 5 ms 5400 KB Output is correct
10 Correct 5 ms 5400 KB Output is correct
11 Correct 5 ms 5400 KB Output is correct
12 Correct 5 ms 5400 KB Output is correct
13 Correct 5 ms 5400 KB Output is correct
14 Correct 6 ms 5400 KB Output is correct
15 Correct 5 ms 5400 KB Output is correct
16 Correct 5 ms 5400 KB Output is correct
17 Correct 5 ms 5400 KB Output is correct
18 Correct 5 ms 5400 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 5 ms 4984 KB Output is correct
2 Correct 6 ms 5092 KB Output is correct
3 Correct 5 ms 5092 KB Output is correct
4 Correct 5 ms 5144 KB Output is correct
5 Correct 5 ms 5144 KB Output is correct
6 Correct 6 ms 5196 KB Output is correct
7 Correct 5 ms 5244 KB Output is correct
8 Correct 6 ms 5400 KB Output is correct
9 Correct 5 ms 5400 KB Output is correct
10 Correct 5 ms 5400 KB Output is correct
11 Correct 5 ms 5400 KB Output is correct
12 Correct 5 ms 5400 KB Output is correct
13 Correct 5 ms 5400 KB Output is correct
14 Correct 6 ms 5400 KB Output is correct
15 Correct 5 ms 5400 KB Output is correct
16 Correct 5 ms 5400 KB Output is correct
17 Correct 5 ms 5400 KB Output is correct
18 Correct 5 ms 5400 KB Output is correct
19 Correct 5 ms 5400 KB Output is correct
20 Correct 5 ms 5400 KB Output is correct
21 Correct 7 ms 5400 KB Output is correct
22 Correct 6 ms 5400 KB Output is correct
23 Correct 6 ms 5400 KB Output is correct
24 Correct 7 ms 5400 KB Output is correct
25 Correct 6 ms 5400 KB Output is correct
26 Correct 6 ms 5400 KB Output is correct
27 Correct 5 ms 5400 KB Output is correct
28 Correct 6 ms 5452 KB Output is correct
29 Correct 6 ms 5452 KB Output is correct
30 Correct 6 ms 5452 KB Output is correct
31 Correct 6 ms 5452 KB Output is correct
32 Correct 7 ms 5452 KB Output is correct
33 Correct 6 ms 5452 KB Output is correct
34 Correct 6 ms 5452 KB Output is correct
35 Correct 6 ms 5452 KB Output is correct
36 Correct 6 ms 5452 KB Output is correct
37 Correct 6 ms 5452 KB Output is correct
38 Correct 6 ms 5452 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 5 ms 4984 KB Output is correct
2 Correct 6 ms 5092 KB Output is correct
3 Correct 5 ms 5092 KB Output is correct
4 Correct 5 ms 5144 KB Output is correct
5 Correct 5 ms 5144 KB Output is correct
6 Correct 6 ms 5196 KB Output is correct
7 Correct 5 ms 5244 KB Output is correct
8 Correct 6 ms 5400 KB Output is correct
9 Correct 5 ms 5400 KB Output is correct
10 Correct 5 ms 5400 KB Output is correct
11 Correct 5 ms 5400 KB Output is correct
12 Correct 5 ms 5400 KB Output is correct
13 Correct 5 ms 5400 KB Output is correct
14 Correct 6 ms 5400 KB Output is correct
15 Correct 5 ms 5400 KB Output is correct
16 Correct 5 ms 5400 KB Output is correct
17 Correct 5 ms 5400 KB Output is correct
18 Correct 5 ms 5400 KB Output is correct
19 Correct 126 ms 10092 KB Output is correct
20 Correct 133 ms 10264 KB Output is correct
21 Correct 132 ms 10264 KB Output is correct
22 Correct 138 ms 10352 KB Output is correct
23 Correct 134 ms 10352 KB Output is correct
24 Correct 118 ms 10388 KB Output is correct
25 Correct 120 ms 23192 KB Output is correct
26 Correct 115 ms 34540 KB Output is correct
27 Correct 231 ms 34540 KB Output is correct
28 Correct 335 ms 66484 KB Output is correct
29 Correct 332 ms 66484 KB Output is correct
30 Correct 236 ms 66484 KB Output is correct
31 Correct 224 ms 66484 KB Output is correct
32 Correct 229 ms 66484 KB Output is correct
33 Correct 213 ms 66484 KB Output is correct
34 Correct 192 ms 66484 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 5 ms 4984 KB Output is correct
2 Correct 6 ms 5092 KB Output is correct
3 Correct 5 ms 5092 KB Output is correct
4 Correct 5 ms 5144 KB Output is correct
5 Correct 5 ms 5144 KB Output is correct
6 Correct 6 ms 5196 KB Output is correct
7 Correct 5 ms 5244 KB Output is correct
8 Correct 6 ms 5400 KB Output is correct
9 Correct 5 ms 5400 KB Output is correct
10 Correct 5 ms 5400 KB Output is correct
11 Correct 5 ms 5400 KB Output is correct
12 Correct 5 ms 5400 KB Output is correct
13 Correct 5 ms 5400 KB Output is correct
14 Correct 6 ms 5400 KB Output is correct
15 Correct 5 ms 5400 KB Output is correct
16 Correct 5 ms 5400 KB Output is correct
17 Correct 5 ms 5400 KB Output is correct
18 Correct 5 ms 5400 KB Output is correct
19 Correct 5 ms 5400 KB Output is correct
20 Correct 5 ms 5400 KB Output is correct
21 Correct 7 ms 5400 KB Output is correct
22 Correct 6 ms 5400 KB Output is correct
23 Correct 6 ms 5400 KB Output is correct
24 Correct 7 ms 5400 KB Output is correct
25 Correct 6 ms 5400 KB Output is correct
26 Correct 6 ms 5400 KB Output is correct
27 Correct 5 ms 5400 KB Output is correct
28 Correct 6 ms 5452 KB Output is correct
29 Correct 6 ms 5452 KB Output is correct
30 Correct 6 ms 5452 KB Output is correct
31 Correct 6 ms 5452 KB Output is correct
32 Correct 7 ms 5452 KB Output is correct
33 Correct 6 ms 5452 KB Output is correct
34 Correct 6 ms 5452 KB Output is correct
35 Correct 6 ms 5452 KB Output is correct
36 Correct 6 ms 5452 KB Output is correct
37 Correct 6 ms 5452 KB Output is correct
38 Correct 6 ms 5452 KB Output is correct
39 Correct 126 ms 10092 KB Output is correct
40 Correct 133 ms 10264 KB Output is correct
41 Correct 132 ms 10264 KB Output is correct
42 Correct 138 ms 10352 KB Output is correct
43 Correct 134 ms 10352 KB Output is correct
44 Correct 118 ms 10388 KB Output is correct
45 Correct 120 ms 23192 KB Output is correct
46 Correct 115 ms 34540 KB Output is correct
47 Correct 231 ms 34540 KB Output is correct
48 Correct 335 ms 66484 KB Output is correct
49 Correct 332 ms 66484 KB Output is correct
50 Correct 236 ms 66484 KB Output is correct
51 Correct 224 ms 66484 KB Output is correct
52 Correct 229 ms 66484 KB Output is correct
53 Correct 213 ms 66484 KB Output is correct
54 Correct 192 ms 66484 KB Output is correct
55 Correct 20 ms 66484 KB Output is correct
56 Correct 15 ms 66484 KB Output is correct
57 Correct 94 ms 66484 KB Output is correct
58 Correct 65 ms 66484 KB Output is correct
59 Correct 112 ms 66484 KB Output is correct
60 Correct 350 ms 66484 KB Output is correct
61 Correct 285 ms 66484 KB Output is correct
62 Correct 244 ms 66484 KB Output is correct
63 Correct 274 ms 66484 KB Output is correct
64 Correct 518 ms 66484 KB Output is correct
65 Correct 261 ms 66484 KB Output is correct
66 Correct 417 ms 66484 KB Output is correct
67 Correct 208 ms 66484 KB Output is correct
68 Correct 347 ms 66484 KB Output is correct
69 Correct 434 ms 66484 KB Output is correct
70 Correct 340 ms 66484 KB Output is correct