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답안 #492982

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
492982 2021-12-09T21:44:26 Z 1ne 경주 (Race) (IOI11_race) C++14
100 / 100
 655 ms 75348 KB 
#include "race.h"
#include<bits/stdc++.h>
using namespace std;
vector<set<pair<int64_t,int64_t>>>adj;
int64_t k=0;
vector<int64_t>sub(1e6,0);
vector<int64_t>ans;
vector<int64_t>aux;
int64_t answer = LLONG_MAX;
int64_t kk = -1;
int64_t bookmark = 0;
void dfs (int64_t cur,int64_t par,int64_t cost,int64_t len,int64_t fill){
  if (cost>kk)return;
	if (fill){
		if (aux[cost]<bookmark){
			aux[cost] = bookmark;
			ans[cost] = len;
		}
		else if (len<ans[cost]){
			ans[cost] = len;
			aux[cost] = bookmark;
		}
	}
	else{
		if (aux[kk - cost]==bookmark){
			if (len + ans[kk - cost]<answer){
				answer = min(answer,len + ans[kk-cost]);
			}
        }
		if (cost ==kk){
			answer = min(answer,len);
		}
	}
	for (auto x:adj[cur]){
		if (x.first!=par){
			dfs(x.first,cur,cost + x.second,len + 1,fill);
		}
	}
}
void getsub(int64_t u,int64_t par){
	sub[u]=1;
	k++;
	for (auto x:adj[u]){
		if (x.first!=par){
			getsub(x.first,u);
			sub[u]+=sub[x.first];
		}
	}
}
int64_t getcentroid(int64_t u,int64_t par){
	for (auto x:adj[u]){
		if (x.first!=par){
			if (sub[x.first]>k/2){
				return getcentroid(x.first,u);
			}
		}
	}
	return u;
}
void decomposition(int64_t u,int64_t par){
	k = 0;
	getsub(u,-1);
	int64_t c = getcentroid(u,-1);
	bookmark++;
	for (auto x:adj[c]){
		dfs(x.first,c,x.second,1,0);
		dfs(x.first,c,x.second,1,1);
	}
	for (auto x:adj[c]){
		adj[x.first].erase({c,x.second});
		//adj[c].erase(x);
		decomposition(x.first,c);
	}
}
void build(){
	decomposition(0,-1);
}
int best_path(int N, int K, int H[][2], int L[])
{
	aux.resize(K + 1,0);
	ans.resize(K + 1,0);
	adj.resize(N + 1);
	kk = K;
 	for (int64_t i = 0;i<N-1;++i){
 		adj[H[i][0]].insert({H[i][1],L[i]});
 		adj[H[i][1]].insert({H[i][0],L[i]});
 	}
 	build();
 	if (answer==LLONG_MAX){
 		return -1;
 	}
 	return answer;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 8140 KB Output is correct
2 Correct 3 ms 8140 KB Output is correct
3 Correct 3 ms 8140 KB Output is correct
4 Correct 3 ms 8140 KB Output is correct
5 Correct 3 ms 8140 KB Output is correct
6 Correct 4 ms 8140 KB Output is correct
7 Correct 3 ms 8140 KB Output is correct
8 Correct 4 ms 8140 KB Output is correct
9 Correct 4 ms 8148 KB Output is correct
10 Correct 3 ms 8140 KB Output is correct
11 Correct 4 ms 8140 KB Output is correct
12 Correct 3 ms 8140 KB Output is correct
13 Correct 4 ms 8140 KB Output is correct
14 Correct 4 ms 8140 KB Output is correct
15 Correct 4 ms 8140 KB Output is correct
16 Correct 4 ms 8140 KB Output is correct
17 Correct 3 ms 8140 KB Output is correct
18 Correct 4 ms 8140 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 8140 KB Output is correct
2 Correct 3 ms 8140 KB Output is correct
3 Correct 3 ms 8140 KB Output is correct
4 Correct 3 ms 8140 KB Output is correct
5 Correct 3 ms 8140 KB Output is correct
6 Correct 4 ms 8140 KB Output is correct
7 Correct 3 ms 8140 KB Output is correct
8 Correct 4 ms 8140 KB Output is correct
9 Correct 4 ms 8148 KB Output is correct
10 Correct 3 ms 8140 KB Output is correct
11 Correct 4 ms 8140 KB Output is correct
12 Correct 3 ms 8140 KB Output is correct
13 Correct 4 ms 8140 KB Output is correct
14 Correct 4 ms 8140 KB Output is correct
15 Correct 4 ms 8140 KB Output is correct
16 Correct 4 ms 8140 KB Output is correct
17 Correct 3 ms 8140 KB Output is correct
18 Correct 4 ms 8140 KB Output is correct
19 Correct 4 ms 8140 KB Output is correct
20 Correct 3 ms 8140 KB Output is correct
21 Correct 4 ms 8268 KB Output is correct
22 Correct 11 ms 22640 KB Output is correct
23 Correct 12 ms 20172 KB Output is correct
24 Correct 11 ms 21888 KB Output is correct
25 Correct 11 ms 21484 KB Output is correct
26 Correct 6 ms 13516 KB Output is correct
27 Correct 10 ms 20804 KB Output is correct
28 Correct 5 ms 11468 KB Output is correct
29 Correct 7 ms 13424 KB Output is correct
30 Correct 7 ms 14096 KB Output is correct
31 Correct 9 ms 18552 KB Output is correct
32 Correct 9 ms 19416 KB Output is correct
33 Correct 10 ms 20592 KB Output is correct
34 Correct 8 ms 17484 KB Output is correct
35 Correct 10 ms 20940 KB Output is correct
36 Correct 10 ms 22868 KB Output is correct
37 Correct 9 ms 20684 KB Output is correct
38 Correct 8 ms 16304 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 8140 KB Output is correct
2 Correct 3 ms 8140 KB Output is correct
3 Correct 3 ms 8140 KB Output is correct
4 Correct 3 ms 8140 KB Output is correct
5 Correct 3 ms 8140 KB Output is correct
6 Correct 4 ms 8140 KB Output is correct
7 Correct 3 ms 8140 KB Output is correct
8 Correct 4 ms 8140 KB Output is correct
9 Correct 4 ms 8148 KB Output is correct
10 Correct 3 ms 8140 KB Output is correct
11 Correct 4 ms 8140 KB Output is correct
12 Correct 3 ms 8140 KB Output is correct
13 Correct 4 ms 8140 KB Output is correct
14 Correct 4 ms 8140 KB Output is correct
15 Correct 4 ms 8140 KB Output is correct
16 Correct 4 ms 8140 KB Output is correct
17 Correct 3 ms 8140 KB Output is correct
18 Correct 4 ms 8140 KB Output is correct
19 Correct 195 ms 28056 KB Output is correct
20 Correct 209 ms 27960 KB Output is correct
21 Correct 218 ms 27844 KB Output is correct
22 Correct 239 ms 27988 KB Output is correct
23 Correct 119 ms 28032 KB Output is correct
24 Correct 91 ms 27992 KB Output is correct
25 Correct 201 ms 31044 KB Output is correct
26 Correct 125 ms 34124 KB Output is correct
27 Correct 290 ms 47492 KB Output is correct
28 Correct 388 ms 59960 KB Output is correct
29 Correct 383 ms 59184 KB Output is correct
30 Correct 277 ms 47428 KB Output is correct
31 Correct 282 ms 47468 KB Output is correct
32 Correct 325 ms 47300 KB Output is correct
33 Correct 324 ms 47748 KB Output is correct
34 Correct 283 ms 47364 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 8140 KB Output is correct
2 Correct 3 ms 8140 KB Output is correct
3 Correct 3 ms 8140 KB Output is correct
4 Correct 3 ms 8140 KB Output is correct
5 Correct 3 ms 8140 KB Output is correct
6 Correct 4 ms 8140 KB Output is correct
7 Correct 3 ms 8140 KB Output is correct
8 Correct 4 ms 8140 KB Output is correct
9 Correct 4 ms 8148 KB Output is correct
10 Correct 3 ms 8140 KB Output is correct
11 Correct 4 ms 8140 KB Output is correct
12 Correct 3 ms 8140 KB Output is correct
13 Correct 4 ms 8140 KB Output is correct
14 Correct 4 ms 8140 KB Output is correct
15 Correct 4 ms 8140 KB Output is correct
16 Correct 4 ms 8140 KB Output is correct
17 Correct 3 ms 8140 KB Output is correct
18 Correct 4 ms 8140 KB Output is correct
19 Correct 4 ms 8140 KB Output is correct
20 Correct 3 ms 8140 KB Output is correct
21 Correct 4 ms 8268 KB Output is correct
22 Correct 11 ms 22640 KB Output is correct
23 Correct 12 ms 20172 KB Output is correct
24 Correct 11 ms 21888 KB Output is correct
25 Correct 11 ms 21484 KB Output is correct
26 Correct 6 ms 13516 KB Output is correct
27 Correct 10 ms 20804 KB Output is correct
28 Correct 5 ms 11468 KB Output is correct
29 Correct 7 ms 13424 KB Output is correct
30 Correct 7 ms 14096 KB Output is correct
31 Correct 9 ms 18552 KB Output is correct
32 Correct 9 ms 19416 KB Output is correct
33 Correct 10 ms 20592 KB Output is correct
34 Correct 8 ms 17484 KB Output is correct
35 Correct 10 ms 20940 KB Output is correct
36 Correct 10 ms 22868 KB Output is correct
37 Correct 9 ms 20684 KB Output is correct
38 Correct 8 ms 16304 KB Output is correct
39 Correct 195 ms 28056 KB Output is correct
40 Correct 209 ms 27960 KB Output is correct
41 Correct 218 ms 27844 KB Output is correct
42 Correct 239 ms 27988 KB Output is correct
43 Correct 119 ms 28032 KB Output is correct
44 Correct 91 ms 27992 KB Output is correct
45 Correct 201 ms 31044 KB Output is correct
46 Correct 125 ms 34124 KB Output is correct
47 Correct 290 ms 47492 KB Output is correct
48 Correct 388 ms 59960 KB Output is correct
49 Correct 383 ms 59184 KB Output is correct
50 Correct 277 ms 47428 KB Output is correct
51 Correct 282 ms 47468 KB Output is correct
52 Correct 325 ms 47300 KB Output is correct
53 Correct 324 ms 47748 KB Output is correct
54 Correct 283 ms 47364 KB Output is correct
55 Correct 14 ms 10080 KB Output is correct
56 Correct 14 ms 10060 KB Output is correct
57 Correct 109 ms 27856 KB Output is correct
58 Correct 69 ms 27488 KB Output is correct
59 Correct 136 ms 37104 KB Output is correct
60 Correct 655 ms 75348 KB Output is correct
61 Correct 301 ms 47428 KB Output is correct
62 Correct 313 ms 63044 KB Output is correct
63 Correct 410 ms 63100 KB Output is correct
64 Correct 619 ms 55748 KB Output is correct
65 Correct 346 ms 47668 KB Output is correct
66 Correct 523 ms 72772 KB Output is correct
67 Correct 330 ms 63276 KB Output is correct
68 Correct 427 ms 62420 KB Output is correct
69 Correct 431 ms 62820 KB Output is correct
70 Correct 376 ms 60796 KB Output is correct