답안 #399075

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
399075	2021-05-05T08:56:14 Z	Petremol	경주 (Race) (IOI11_race)	C++17	21 / 100	228 ms	14276 KB

race

#include "race.h"
#include <bits/stdc++.h>
#define int long long int
#define all(x) x.begin(), x.end()
#define send ios_base::sync_with_stdio(false);
#define help cin.tie(NULL)
#define inf (int)(1e17+1)
#define mod (int)(1e9+7)
#define N (int)(2e5+5)
#define fi first
#define se second
#define endl "\n"
#define double long double
#define eps (double)(1e-9)
#define sa cout<<"sa"<<endl
using namespace std;

int n,k;
vector <pair<int,int>> adj[N];
vector <int> sz(N);
vector <bool> mrk(N);

int sdfs(int c,int pre=0){
	sz[c]=1;
	for(auto x:adj[c]){
		if(x.fi==pre||mrk[x.fi]) continue;
		sz[c]+=sdfs(x.fi,c);
	}
	return sz[c];
}

int get(int c,int pre,int s){
	for(auto x:adj[c]){
		if(x.fi==pre||mrk[x.fi]) continue;
		if(2*sz[x.fi]>s) return get(x.fi,c,s);
	}
	return c;
}

map <int,int> cmp;

void dfs(int c,int pre,int d,int cur){
	if(cur>k) return;
	for(auto x:adj[c]){
		if(x.fi==pre||mrk[x.fi]) continue;
		dfs(x.fi,c,d+1,cur+x.se);
	}
	cmp[cur]=d;
}

int ans=inf;

void centroid(int c){
	c=get(c,0,sdfs(c));
	mrk[c]=1;

	map<int,int> mp;
	mp[0]=0;

	for(auto x:adj[c]) if(!mrk[x.fi]){
		dfs(x.fi,c,1,x.se);
		if(mp.size()<cmp.size()) swap(mp,cmp);
		for(auto e:cmp) if(mp.count(k-e.fi)) ans=min(ans,e.se+mp[k-e.fi]);
		for(auto e:cmp){
			if(mp.count(e.fi)) mp[e.fi]=min(mp[e.fi],e.se);
			else mp[e.fi]=e.se;
		}
		cmp.clear();
	}

	for(auto x:adj[c]) if(!mrk[x.fi]) centroid(x.fi);
}

int32_t best_path(int32_t Na, int32_t Ka, int32_t H[][2], int32_t L[]){
	n=Na;k=Ka;
	for(int i=0;i<n-1;i++){
		int u=H[i][0],v=H[i][1],w=L[i];
		++u;++v;
		adj[u].push_back({v,w});
		adj[v].push_back({u,w});
	}
	centroid(1);
	return((ans!=inf)?ans:-1);
}

Subtask #1
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	6604 KB	Output is correct
2	Correct	4 ms	6612 KB	Output is correct
3	Correct	5 ms	6608 KB	Output is correct
4	Correct	4 ms	6604 KB	Output is correct
5	Correct	4 ms	6608 KB	Output is correct
6	Correct	4 ms	6604 KB	Output is correct
7	Correct	5 ms	6604 KB	Output is correct
8	Correct	4 ms	6604 KB	Output is correct
9	Correct	5 ms	6604 KB	Output is correct
10	Correct	4 ms	6604 KB	Output is correct
11	Correct	4 ms	6604 KB	Output is correct
12	Correct	5 ms	6604 KB	Output is correct
13	Correct	5 ms	6536 KB	Output is correct
14	Correct	5 ms	6572 KB	Output is correct
15	Correct	5 ms	6604 KB	Output is correct
16	Correct	5 ms	6608 KB	Output is correct
17	Correct	5 ms	6608 KB	Output is correct
18	Correct	5 ms	6604 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	6604 KB	Output is correct
2	Correct	4 ms	6612 KB	Output is correct
3	Correct	5 ms	6608 KB	Output is correct
4	Correct	4 ms	6604 KB	Output is correct
5	Correct	4 ms	6608 KB	Output is correct
6	Correct	4 ms	6604 KB	Output is correct
7	Correct	5 ms	6604 KB	Output is correct
8	Correct	4 ms	6604 KB	Output is correct
9	Correct	5 ms	6604 KB	Output is correct
10	Correct	4 ms	6604 KB	Output is correct
11	Correct	4 ms	6604 KB	Output is correct
12	Correct	5 ms	6604 KB	Output is correct
13	Correct	5 ms	6536 KB	Output is correct
14	Correct	5 ms	6572 KB	Output is correct
15	Correct	5 ms	6604 KB	Output is correct
16	Correct	5 ms	6608 KB	Output is correct
17	Correct	5 ms	6608 KB	Output is correct
18	Correct	5 ms	6604 KB	Output is correct
19	Correct	5 ms	6604 KB	Output is correct
20	Correct	4 ms	6520 KB	Output is correct
21	Correct	6 ms	6732 KB	Output is correct
22	Correct	6 ms	6604 KB	Output is correct
23	Correct	5 ms	6604 KB	Output is correct
24	Correct	5 ms	6676 KB	Output is correct
25	Correct	6 ms	6732 KB	Output is correct
26	Correct	6 ms	6616 KB	Output is correct
27	Correct	5 ms	6604 KB	Output is correct
28	Correct	6 ms	6732 KB	Output is correct
29	Correct	7 ms	6732 KB	Output is correct
30	Correct	6 ms	6732 KB	Output is correct
31	Correct	7 ms	6748 KB	Output is correct
32	Correct	7 ms	6752 KB	Output is correct
33	Correct	7 ms	6732 KB	Output is correct
34	Correct	6 ms	6604 KB	Output is correct
35	Correct	6 ms	6604 KB	Output is correct
36	Correct	6 ms	6604 KB	Output is correct
37	Correct	6 ms	6680 KB	Output is correct
38	Correct	6 ms	6744 KB	Output is correct

Subtask #3
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	6604 KB	Output is correct
2	Correct	4 ms	6612 KB	Output is correct
3	Correct	5 ms	6608 KB	Output is correct
4	Correct	4 ms	6604 KB	Output is correct
5	Correct	4 ms	6608 KB	Output is correct
6	Correct	4 ms	6604 KB	Output is correct
7	Correct	5 ms	6604 KB	Output is correct
8	Correct	4 ms	6604 KB	Output is correct
9	Correct	5 ms	6604 KB	Output is correct
10	Correct	4 ms	6604 KB	Output is correct
11	Correct	4 ms	6604 KB	Output is correct
12	Correct	5 ms	6604 KB	Output is correct
13	Correct	5 ms	6536 KB	Output is correct
14	Correct	5 ms	6572 KB	Output is correct
15	Correct	5 ms	6604 KB	Output is correct
16	Correct	5 ms	6608 KB	Output is correct
17	Correct	5 ms	6608 KB	Output is correct
18	Correct	5 ms	6604 KB	Output is correct
19	Correct	225 ms	14232 KB	Output is correct
20	Correct	228 ms	14276 KB	Output is correct
21	Incorrect	228 ms	14276 KB	Output isn't correct
22	Halted	0 ms	0 KB	-

Subtask #4
0 / 57.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	6604 KB	Output is correct
2	Correct	4 ms	6612 KB	Output is correct
3	Correct	5 ms	6608 KB	Output is correct
4	Correct	4 ms	6604 KB	Output is correct
5	Correct	4 ms	6608 KB	Output is correct
6	Correct	4 ms	6604 KB	Output is correct
7	Correct	5 ms	6604 KB	Output is correct
8	Correct	4 ms	6604 KB	Output is correct
9	Correct	5 ms	6604 KB	Output is correct
10	Correct	4 ms	6604 KB	Output is correct
11	Correct	4 ms	6604 KB	Output is correct
12	Correct	5 ms	6604 KB	Output is correct
13	Correct	5 ms	6536 KB	Output is correct
14	Correct	5 ms	6572 KB	Output is correct
15	Correct	5 ms	6604 KB	Output is correct
16	Correct	5 ms	6608 KB	Output is correct
17	Correct	5 ms	6608 KB	Output is correct
18	Correct	5 ms	6604 KB	Output is correct
19	Correct	5 ms	6604 KB	Output is correct
20	Correct	4 ms	6520 KB	Output is correct
21	Correct	6 ms	6732 KB	Output is correct
22	Correct	6 ms	6604 KB	Output is correct
23	Correct	5 ms	6604 KB	Output is correct
24	Correct	5 ms	6676 KB	Output is correct
25	Correct	6 ms	6732 KB	Output is correct
26	Correct	6 ms	6616 KB	Output is correct
27	Correct	5 ms	6604 KB	Output is correct
28	Correct	6 ms	6732 KB	Output is correct
29	Correct	7 ms	6732 KB	Output is correct
30	Correct	6 ms	6732 KB	Output is correct
31	Correct	7 ms	6748 KB	Output is correct
32	Correct	7 ms	6752 KB	Output is correct
33	Correct	7 ms	6732 KB	Output is correct
34	Correct	6 ms	6604 KB	Output is correct
35	Correct	6 ms	6604 KB	Output is correct
36	Correct	6 ms	6604 KB	Output is correct
37	Correct	6 ms	6680 KB	Output is correct
38	Correct	6 ms	6744 KB	Output is correct
39	Correct	225 ms	14232 KB	Output is correct
40	Correct	228 ms	14276 KB	Output is correct
41	Incorrect	228 ms	14276 KB	Output isn't correct
42	Halted	0 ms	0 KB	-

답안 #399075

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 12.0 / 12.0

Subtask #3 0 / 22.0

Subtask #4 0 / 57.0

Subtask #1
9.0 / 9.0

Subtask #2
12.0 / 12.0

Subtask #3
0 / 22.0

Subtask #4
0 / 57.0