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답안 #555645

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
555645 2022-05-01T09:54:20 Z xdfactor2034 경주 (Race) (IOI11_race) C++17
100 / 100
 1212 ms 118772 KB 
#include<bits/extc++.h>
using namespace std;
using namespace __gnu_pbds;
#define int long long
const int mxN = 1e6+5;
using pii = pair<int,int>;
set<pii> tr[mxN];
int sbsz[mxN], seen[mxN], N, K, res = LLONG_MAX, within;
int gsb(int x, int p=-1) {
	sbsz[x] = 1ll;
	#define nn it.second
	for(auto it : tr[x]) if(!seen[nn] && nn != p) sbsz[x] += gsb(nn, x);
	return sbsz[x];
}
int gc(int x, int p=-1) {
	for(auto it : tr[x]) if(!seen[nn] && nn != p && sbsz[nn]*2ll>within) return gc(nn,x);
	seen[x]=1; return x;
}
gp_hash_table<int,int> rol, loc;
void pdfs(int x, int p, int dist, int len) {
	assert(!seen[x]);
	assert(dist >= 0);
	if(dist > K) return;
	if(loc.find(dist) == loc.end()) loc[dist] = len; else loc[dist] = min(loc[dist], len);
	for(auto it : tr[x]) if(!seen[nn] && nn != p) {
		pdfs(nn, x, dist + it.first, len+1ll);
	}
}
int le = -1;
void de(int x){
	within = gsb(x,-1);
	int cen = gc(x,-1);
	rol.clear(); loc.clear();
	rol.insert({0,0});
	for(auto it : tr[cen]) if(!seen[nn]) {
		loc.clear();
		pdfs(nn, cen, it.first, 1ll);
		for(auto en : loc) {
			if(K-en.first < 0) continue; 
			if(rol.find(K-en.first) != rol.end()) res = min(res, en.second+rol[K-en.first]);
		}
		for(auto en : loc) { if(en.first < 0 || en.first > K) continue; if(rol.find(en.first) == rol.end()) rol[en.first] = en.second; else rol[en.first] = min(rol[en.first], en.second); }
	}

	for(auto it : tr[cen]) if(!seen[nn]) {
		de(nn);
	}
}
signed best_path(signed n, signed k, signed h[][2], signed l[]) {
	N = n, K = k;

	for(int i = 0; i < N-1; i++) {
		int a = h[i][0], b = h[i][1], w = l[i];
		tr[a].insert({w,b});
		tr[b].insert({w,a});
	}
	de(0);
	if(res == LLONG_MAX) return -1; else return res;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 47188 KB Output is correct
2 Correct 24 ms 47316 KB Output is correct
3 Correct 24 ms 47292 KB Output is correct
4 Correct 25 ms 47272 KB Output is correct
5 Correct 24 ms 47264 KB Output is correct
6 Correct 28 ms 47276 KB Output is correct
7 Correct 25 ms 47316 KB Output is correct
8 Correct 26 ms 47260 KB Output is correct
9 Correct 27 ms 47212 KB Output is correct
10 Correct 26 ms 47316 KB Output is correct
11 Correct 29 ms 47220 KB Output is correct
12 Correct 24 ms 47312 KB Output is correct
13 Correct 29 ms 47316 KB Output is correct
14 Correct 23 ms 47316 KB Output is correct
15 Correct 24 ms 47256 KB Output is correct
16 Correct 26 ms 47224 KB Output is correct
17 Correct 24 ms 47324 KB Output is correct
18 Correct 23 ms 47284 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 47188 KB Output is correct
2 Correct 24 ms 47316 KB Output is correct
3 Correct 24 ms 47292 KB Output is correct
4 Correct 25 ms 47272 KB Output is correct
5 Correct 24 ms 47264 KB Output is correct
6 Correct 28 ms 47276 KB Output is correct
7 Correct 25 ms 47316 KB Output is correct
8 Correct 26 ms 47260 KB Output is correct
9 Correct 27 ms 47212 KB Output is correct
10 Correct 26 ms 47316 KB Output is correct
11 Correct 29 ms 47220 KB Output is correct
12 Correct 24 ms 47312 KB Output is correct
13 Correct 29 ms 47316 KB Output is correct
14 Correct 23 ms 47316 KB Output is correct
15 Correct 24 ms 47256 KB Output is correct
16 Correct 26 ms 47224 KB Output is correct
17 Correct 24 ms 47324 KB Output is correct
18 Correct 23 ms 47284 KB Output is correct
19 Correct 25 ms 47188 KB Output is correct
20 Correct 24 ms 47224 KB Output is correct
21 Correct 27 ms 47444 KB Output is correct
22 Correct 27 ms 47368 KB Output is correct
23 Correct 27 ms 47392 KB Output is correct
24 Correct 30 ms 47368 KB Output is correct
25 Correct 26 ms 47564 KB Output is correct
26 Correct 25 ms 47348 KB Output is correct
27 Correct 28 ms 47376 KB Output is correct
28 Correct 30 ms 47440 KB Output is correct
29 Correct 27 ms 47556 KB Output is correct
30 Correct 27 ms 47572 KB Output is correct
31 Correct 25 ms 47572 KB Output is correct
32 Correct 30 ms 47572 KB Output is correct
33 Correct 27 ms 47552 KB Output is correct
34 Correct 28 ms 47384 KB Output is correct
35 Correct 28 ms 47436 KB Output is correct
36 Correct 32 ms 47440 KB Output is correct
37 Correct 27 ms 47440 KB Output is correct
38 Correct 25 ms 47476 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 47188 KB Output is correct
2 Correct 24 ms 47316 KB Output is correct
3 Correct 24 ms 47292 KB Output is correct
4 Correct 25 ms 47272 KB Output is correct
5 Correct 24 ms 47264 KB Output is correct
6 Correct 28 ms 47276 KB Output is correct
7 Correct 25 ms 47316 KB Output is correct
8 Correct 26 ms 47260 KB Output is correct
9 Correct 27 ms 47212 KB Output is correct
10 Correct 26 ms 47316 KB Output is correct
11 Correct 29 ms 47220 KB Output is correct
12 Correct 24 ms 47312 KB Output is correct
13 Correct 29 ms 47316 KB Output is correct
14 Correct 23 ms 47316 KB Output is correct
15 Correct 24 ms 47256 KB Output is correct
16 Correct 26 ms 47224 KB Output is correct
17 Correct 24 ms 47324 KB Output is correct
18 Correct 23 ms 47284 KB Output is correct
19 Correct 275 ms 63864 KB Output is correct
20 Correct 272 ms 63924 KB Output is correct
21 Correct 319 ms 63920 KB Output is correct
22 Correct 282 ms 63948 KB Output is correct
23 Correct 186 ms 63988 KB Output is correct
24 Correct 168 ms 63996 KB Output is correct
25 Correct 246 ms 67212 KB Output is correct
26 Correct 150 ms 70156 KB Output is correct
27 Correct 411 ms 80600 KB Output is correct
28 Correct 541 ms 93492 KB Output is correct
29 Correct 526 ms 92452 KB Output is correct
30 Correct 427 ms 80584 KB Output is correct
31 Correct 412 ms 80556 KB Output is correct
32 Correct 457 ms 80668 KB Output is correct
33 Correct 505 ms 80760 KB Output is correct
34 Correct 325 ms 81568 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 47188 KB Output is correct
2 Correct 24 ms 47316 KB Output is correct
3 Correct 24 ms 47292 KB Output is correct
4 Correct 25 ms 47272 KB Output is correct
5 Correct 24 ms 47264 KB Output is correct
6 Correct 28 ms 47276 KB Output is correct
7 Correct 25 ms 47316 KB Output is correct
8 Correct 26 ms 47260 KB Output is correct
9 Correct 27 ms 47212 KB Output is correct
10 Correct 26 ms 47316 KB Output is correct
11 Correct 29 ms 47220 KB Output is correct
12 Correct 24 ms 47312 KB Output is correct
13 Correct 29 ms 47316 KB Output is correct
14 Correct 23 ms 47316 KB Output is correct
15 Correct 24 ms 47256 KB Output is correct
16 Correct 26 ms 47224 KB Output is correct
17 Correct 24 ms 47324 KB Output is correct
18 Correct 23 ms 47284 KB Output is correct
19 Correct 25 ms 47188 KB Output is correct
20 Correct 24 ms 47224 KB Output is correct
21 Correct 27 ms 47444 KB Output is correct
22 Correct 27 ms 47368 KB Output is correct
23 Correct 27 ms 47392 KB Output is correct
24 Correct 30 ms 47368 KB Output is correct
25 Correct 26 ms 47564 KB Output is correct
26 Correct 25 ms 47348 KB Output is correct
27 Correct 28 ms 47376 KB Output is correct
28 Correct 30 ms 47440 KB Output is correct
29 Correct 27 ms 47556 KB Output is correct
30 Correct 27 ms 47572 KB Output is correct
31 Correct 25 ms 47572 KB Output is correct
32 Correct 30 ms 47572 KB Output is correct
33 Correct 27 ms 47552 KB Output is correct
34 Correct 28 ms 47384 KB Output is correct
35 Correct 28 ms 47436 KB Output is correct
36 Correct 32 ms 47440 KB Output is correct
37 Correct 27 ms 47440 KB Output is correct
38 Correct 25 ms 47476 KB Output is correct
39 Correct 275 ms 63864 KB Output is correct
40 Correct 272 ms 63924 KB Output is correct
41 Correct 319 ms 63920 KB Output is correct
42 Correct 282 ms 63948 KB Output is correct
43 Correct 186 ms 63988 KB Output is correct
44 Correct 168 ms 63996 KB Output is correct
45 Correct 246 ms 67212 KB Output is correct
46 Correct 150 ms 70156 KB Output is correct
47 Correct 411 ms 80600 KB Output is correct
48 Correct 541 ms 93492 KB Output is correct
49 Correct 526 ms 92452 KB Output is correct
50 Correct 427 ms 80584 KB Output is correct
51 Correct 412 ms 80556 KB Output is correct
52 Correct 457 ms 80668 KB Output is correct
53 Correct 505 ms 80760 KB Output is correct
54 Correct 325 ms 81568 KB Output is correct
55 Correct 50 ms 49344 KB Output is correct
56 Correct 40 ms 48972 KB Output is correct
57 Correct 203 ms 63836 KB Output is correct
58 Correct 159 ms 63564 KB Output is correct
59 Correct 350 ms 83196 KB Output is correct
60 Correct 1212 ms 118772 KB Output is correct
61 Correct 469 ms 80952 KB Output is correct
62 Correct 509 ms 80788 KB Output is correct
63 Correct 577 ms 80824 KB Output is correct
64 Correct 989 ms 94752 KB Output is correct
65 Correct 432 ms 81680 KB Output is correct
66 Correct 963 ms 91152 KB Output is correct
67 Correct 436 ms 81212 KB Output is correct
68 Correct 699 ms 93220 KB Output is correct
69 Correct 677 ms 93540 KB Output is correct
70 Correct 625 ms 91636 KB Output is correct