oj.uz

답안 #598380

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
598380 2022-07-18T08:14:31 Z ono_de206 경주 (Race) (IOI11_race) C++14
100 / 100
 589 ms 32452 KB 
#include "race.h"
 
 
#include<bits/stdc++.h>
using namespace std;
 
#define pb push_back
#define ff first
#define ss second
#define in insert
 
const int mxn=2e5+10,mxk=1e6+10;
vector<pair<int,int> > g[mxn];
int global_answer=-1,n,k,vis[mxn],sub[mxn],nxt,mx;
int book_keeping,minimum_paths[mxk],achievable[mxk];
 
void dfs(int to,int fr)
{
	sub[to]=1;
	for(auto &x : g[to])
	{
		if(x.ff==fr || vis[x.ff]) continue;
		dfs(x.ff,to);
		sub[to]+=sub[x.ff];
	}
}
 
void get_cen(int to,int fr,int sz)
{
	int lomx=sz-sub[to];
	for(auto &x : g[to])
	{
		if(x.ff==fr || vis[x.ff]) continue;
		get_cen(x.ff,to,sz);
		lomx=max(lomx,sub[x.ff]);
	}
	if(lomx<mx)
	{
		mx=lomx;
		nxt=to;
	}
}

void dfs2(int to,int fr,int current_cost,int current_length,int fill)
{
	if(current_cost>k) return;
	if (!fill)
	{
    	if (achievable[k - current_cost] == book_keeping)
     	 	if (current_length + minimum_paths[k - current_cost] < global_answer || global_answer == -1)
        		global_answer = current_length + minimum_paths[k - current_cost];
 
    if (current_cost == k)
      if (current_length < global_answer || global_answer == -1)
        global_answer = current_length;
  }
  else
  {
    if (achievable[current_cost] < book_keeping)
    {
      achievable[current_cost] = book_keeping;
      minimum_paths[current_cost] = current_length;
    }
    else if (current_length < minimum_paths[current_cost])
   	{
    	  achievable[current_cost] = book_keeping;
    	  minimum_paths[current_cost] = current_length;
    	}
  	}
	for(auto &x : g[to])
	{
		if(x.ff==fr || vis[x.ff]) continue;
		dfs2(x.ff,to,current_cost+x.ss,current_length+1,fill);
	}
}
 
void solve(int id)
{
	dfs(id,-1);
	if(sub[id]<=1) return;
	mx=sub[id];
	get_cen(id,-1,sub[id]);
	id=nxt;
	book_keeping++;
	for(auto &x : g[id])
	{
		if(vis[x.ff]) continue;
		dfs2(x.ff,id,x.ss,1,0);
		dfs2(x.ff,id,x.ss,1,1);
	}
	vis[id]=1;
	for(auto &x : g[id])
	{
		if(vis[x.ff]) continue;
		solve(x.ff);
	}
}
 
int best_path(int N, int K, int h[][2], int l[])
{
	n=N;
	k=K;
	memset(vis,0,sizeof(vis));
	for(int i=0; i<N-1; i++)
	{
		g[h[i][0]].pb({h[i][1],l[i]});
		g[h[i][1]].pb({h[i][0],l[i]});
	}
	solve(0);
	return global_answer;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5716 KB Output is correct
2 Correct 3 ms 5716 KB Output is correct
3 Correct 3 ms 5716 KB Output is correct
4 Correct 3 ms 5716 KB Output is correct
5 Correct 3 ms 5716 KB Output is correct
6 Correct 3 ms 5764 KB Output is correct
7 Correct 4 ms 5716 KB Output is correct
8 Correct 3 ms 5716 KB Output is correct
9 Correct 4 ms 5716 KB Output is correct
10 Correct 3 ms 5716 KB Output is correct
11 Correct 4 ms 5716 KB Output is correct
12 Correct 3 ms 5716 KB Output is correct
13 Correct 3 ms 5716 KB Output is correct
14 Correct 3 ms 5716 KB Output is correct
15 Correct 2 ms 5716 KB Output is correct
16 Correct 3 ms 5716 KB Output is correct
17 Correct 3 ms 5716 KB Output is correct
18 Correct 3 ms 5716 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5716 KB Output is correct
2 Correct 3 ms 5716 KB Output is correct
3 Correct 3 ms 5716 KB Output is correct
4 Correct 3 ms 5716 KB Output is correct
5 Correct 3 ms 5716 KB Output is correct
6 Correct 3 ms 5764 KB Output is correct
7 Correct 4 ms 5716 KB Output is correct
8 Correct 3 ms 5716 KB Output is correct
9 Correct 4 ms 5716 KB Output is correct
10 Correct 3 ms 5716 KB Output is correct
11 Correct 4 ms 5716 KB Output is correct
12 Correct 3 ms 5716 KB Output is correct
13 Correct 3 ms 5716 KB Output is correct
14 Correct 3 ms 5716 KB Output is correct
15 Correct 2 ms 5716 KB Output is correct
16 Correct 3 ms 5716 KB Output is correct
17 Correct 3 ms 5716 KB Output is correct
18 Correct 3 ms 5716 KB Output is correct
19 Correct 3 ms 5716 KB Output is correct
20 Correct 3 ms 5716 KB Output is correct
21 Correct 4 ms 5844 KB Output is correct
22 Correct 6 ms 10836 KB Output is correct
23 Correct 6 ms 10188 KB Output is correct
24 Correct 7 ms 11604 KB Output is correct
25 Correct 6 ms 9272 KB Output is correct
26 Correct 5 ms 8404 KB Output is correct
27 Correct 3 ms 5844 KB Output is correct
28 Correct 5 ms 7380 KB Output is correct
29 Correct 5 ms 8404 KB Output is correct
30 Correct 5 ms 8660 KB Output is correct
31 Correct 5 ms 9428 KB Output is correct
32 Correct 6 ms 9556 KB Output is correct
33 Correct 6 ms 11092 KB Output is correct
34 Correct 6 ms 10272 KB Output is correct
35 Correct 6 ms 11732 KB Output is correct
36 Correct 7 ms 12244 KB Output is correct
37 Correct 5 ms 9684 KB Output is correct
38 Correct 5 ms 8148 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5716 KB Output is correct
2 Correct 3 ms 5716 KB Output is correct
3 Correct 3 ms 5716 KB Output is correct
4 Correct 3 ms 5716 KB Output is correct
5 Correct 3 ms 5716 KB Output is correct
6 Correct 3 ms 5764 KB Output is correct
7 Correct 4 ms 5716 KB Output is correct
8 Correct 3 ms 5716 KB Output is correct
9 Correct 4 ms 5716 KB Output is correct
10 Correct 3 ms 5716 KB Output is correct
11 Correct 4 ms 5716 KB Output is correct
12 Correct 3 ms 5716 KB Output is correct
13 Correct 3 ms 5716 KB Output is correct
14 Correct 3 ms 5716 KB Output is correct
15 Correct 2 ms 5716 KB Output is correct
16 Correct 3 ms 5716 KB Output is correct
17 Correct 3 ms 5716 KB Output is correct
18 Correct 3 ms 5716 KB Output is correct
19 Correct 145 ms 11080 KB Output is correct
20 Correct 156 ms 11024 KB Output is correct
21 Correct 131 ms 11056 KB Output is correct
22 Correct 153 ms 11220 KB Output is correct
23 Correct 92 ms 11220 KB Output is correct
24 Correct 54 ms 11164 KB Output is correct
25 Correct 122 ms 13792 KB Output is correct
26 Correct 89 ms 16760 KB Output is correct
27 Correct 171 ms 16408 KB Output is correct
28 Correct 324 ms 27640 KB Output is correct
29 Correct 300 ms 26700 KB Output is correct
30 Correct 155 ms 16512 KB Output is correct
31 Correct 156 ms 16448 KB Output is correct
32 Correct 220 ms 16560 KB Output is correct
33 Correct 223 ms 15392 KB Output is correct
34 Correct 221 ms 15180 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5716 KB Output is correct
2 Correct 3 ms 5716 KB Output is correct
3 Correct 3 ms 5716 KB Output is correct
4 Correct 3 ms 5716 KB Output is correct
5 Correct 3 ms 5716 KB Output is correct
6 Correct 3 ms 5764 KB Output is correct
7 Correct 4 ms 5716 KB Output is correct
8 Correct 3 ms 5716 KB Output is correct
9 Correct 4 ms 5716 KB Output is correct
10 Correct 3 ms 5716 KB Output is correct
11 Correct 4 ms 5716 KB Output is correct
12 Correct 3 ms 5716 KB Output is correct
13 Correct 3 ms 5716 KB Output is correct
14 Correct 3 ms 5716 KB Output is correct
15 Correct 2 ms 5716 KB Output is correct
16 Correct 3 ms 5716 KB Output is correct
17 Correct 3 ms 5716 KB Output is correct
18 Correct 3 ms 5716 KB Output is correct
19 Correct 3 ms 5716 KB Output is correct
20 Correct 3 ms 5716 KB Output is correct
21 Correct 4 ms 5844 KB Output is correct
22 Correct 6 ms 10836 KB Output is correct
23 Correct 6 ms 10188 KB Output is correct
24 Correct 7 ms 11604 KB Output is correct
25 Correct 6 ms 9272 KB Output is correct
26 Correct 5 ms 8404 KB Output is correct
27 Correct 3 ms 5844 KB Output is correct
28 Correct 5 ms 7380 KB Output is correct
29 Correct 5 ms 8404 KB Output is correct
30 Correct 5 ms 8660 KB Output is correct
31 Correct 5 ms 9428 KB Output is correct
32 Correct 6 ms 9556 KB Output is correct
33 Correct 6 ms 11092 KB Output is correct
34 Correct 6 ms 10272 KB Output is correct
35 Correct 6 ms 11732 KB Output is correct
36 Correct 7 ms 12244 KB Output is correct
37 Correct 5 ms 9684 KB Output is correct
38 Correct 5 ms 8148 KB Output is correct
39 Correct 145 ms 11080 KB Output is correct
40 Correct 156 ms 11024 KB Output is correct
41 Correct 131 ms 11056 KB Output is correct
42 Correct 153 ms 11220 KB Output is correct
43 Correct 92 ms 11220 KB Output is correct
44 Correct 54 ms 11164 KB Output is correct
45 Correct 122 ms 13792 KB Output is correct
46 Correct 89 ms 16760 KB Output is correct
47 Correct 171 ms 16408 KB Output is correct
48 Correct 324 ms 27640 KB Output is correct
49 Correct 300 ms 26700 KB Output is correct
50 Correct 155 ms 16512 KB Output is correct
51 Correct 156 ms 16448 KB Output is correct
52 Correct 220 ms 16560 KB Output is correct
53 Correct 223 ms 15392 KB Output is correct
54 Correct 221 ms 15180 KB Output is correct
55 Correct 14 ms 6384 KB Output is correct
56 Correct 11 ms 6340 KB Output is correct
57 Correct 73 ms 11288 KB Output is correct
58 Correct 30 ms 11192 KB Output is correct
59 Correct 103 ms 17536 KB Output is correct
60 Correct 480 ms 31716 KB Output is correct
61 Correct 170 ms 16512 KB Output is correct
62 Correct 189 ms 16516 KB Output is correct
63 Correct 262 ms 16456 KB Output is correct
64 Correct 589 ms 18564 KB Output is correct
65 Correct 292 ms 16540 KB Output is correct
66 Correct 398 ms 32452 KB Output is correct
67 Correct 100 ms 16728 KB Output is correct
68 Correct 250 ms 21876 KB Output is correct
69 Correct 259 ms 22092 KB Output is correct
70 Correct 242 ms 21452 KB Output is correct