oj.uz

답안 #867416

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
867416 2023-10-28T11:06:36 Z HuyQuang_re_Zero 경주 (Race) (IOI11_race) C++14
100 / 100
 409 ms 102488 KB 
#include <bits/stdc++.h>
#define ll long long
#define db long double
#define II pair <ll,ll>
#define III pair <ll,II>
#define IV pair <vector <int>,vector <int> >
#define fst first
#define snd second
#define BIT(x,i) ((x>>i)&1)
#define pi acos(-1)
#define to_radian(x) (x*pi/180.0)
#define to_degree(x) (x*180.0/pi)
#include "race.h"
using namespace std;
map <ll,ll> mp,in4[200002];
vector <II> a[200002];
ll h[200002],w[200002],sz[200002],i,u,v,m,res;
const ll oo=round(1e18);
void dfs(int u,int p)
{
    sz[u]=1;
    for(II adj:a[u])
    {
        int v=adj.fst;
        if(v!=p)
        {
            h[v]=h[u]+1,w[v]=w[u]+adj.snd;
            dfs(v,u),sz[u]+=sz[v];
        }
    }
}
//wu+wv-2*wlca=m
//=>wv=m+2*wlca-wu
void cal(ll wu,ll hu,int lca)
{
   // if(lca==6 && hu==2 && wu==6)
    if(mp.count(m+2*w[lca]-wu))
        res=min(res,hu+mp[m+2*w[lca]-wu]-2*h[lca]);
}
void add(ll w,ll h)
{
    if(!mp.count(w)) mp[w]=h;
    else mp[w]=min(mp[w],h);
}
void DFS(int u,int p)
{
    int x=0;
    for(II adj:a[u])
    {
        int v=adj.fst;
        if(v!=p && sz[x]<sz[v]) x=v;
    }
    for(II adj:a[u])
    {
        int v=adj.fst;
        if(v!=p && v!=x)
        {
            DFS(v,u);
            in4[v]=mp; mp.clear();
        }
    }
    if(x>0) DFS(x,u);
    cal(w[u],h[u],u); add(w[u],h[u]);
    for(II adj:a[u])
    {
        int v=adj.fst;
        if(v==p || v==x) continue;
        for(auto x:in4[v]) cal(x.fst,x.snd,u);
        for(auto x:in4[v]) add(x.fst,x.snd);
    }
}
int best_path(int n,int k,int H[][2],int L[])
{
    m=k;
    for(i=0;i<n-1;i++)
    {
        int u=H[i][0]+1,v=H[i][1]+1,k=L[i];
     //   cerr<<u<<" "<<v<<'\n';
        a[u].push_back({ v,k });
        a[v].push_back({ u,k });
    }
    res=oo;
    dfs(1,0);
    DFS(1,0);
    return (res==oo) ? -1 : res;
}
/*
int main()
{
    freopen("race.inp","r",stdin);
    freopen("race.out","w",stdout);
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int n,m;
    cin>>n>>m;
    int H[n+1][2],L[n+1];
    for(int i=0;i<n-1;i++) cin>>H[i][0]>>H[i][1]>>L[i];
    cout<<best_path(n,m,H,L);
}
*/

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 18780 KB Output is correct
2 Correct 4 ms 18780 KB Output is correct
3 Correct 4 ms 18768 KB Output is correct
4 Correct 4 ms 18780 KB Output is correct
5 Correct 4 ms 18764 KB Output is correct
6 Correct 4 ms 18620 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 4 ms 18780 KB Output is correct
9 Correct 5 ms 18780 KB Output is correct
10 Correct 4 ms 18776 KB Output is correct
11 Correct 5 ms 18780 KB Output is correct
12 Correct 4 ms 18780 KB Output is correct
13 Correct 4 ms 18780 KB Output is correct
14 Correct 4 ms 18780 KB Output is correct
15 Correct 4 ms 18780 KB Output is correct
16 Correct 4 ms 18780 KB Output is correct
17 Correct 4 ms 18780 KB Output is correct
18 Correct 4 ms 18780 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 18780 KB Output is correct
2 Correct 4 ms 18780 KB Output is correct
3 Correct 4 ms 18768 KB Output is correct
4 Correct 4 ms 18780 KB Output is correct
5 Correct 4 ms 18764 KB Output is correct
6 Correct 4 ms 18620 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 4 ms 18780 KB Output is correct
9 Correct 5 ms 18780 KB Output is correct
10 Correct 4 ms 18776 KB Output is correct
11 Correct 5 ms 18780 KB Output is correct
12 Correct 4 ms 18780 KB Output is correct
13 Correct 4 ms 18780 KB Output is correct
14 Correct 4 ms 18780 KB Output is correct
15 Correct 4 ms 18780 KB Output is correct
16 Correct 4 ms 18780 KB Output is correct
17 Correct 4 ms 18780 KB Output is correct
18 Correct 4 ms 18780 KB Output is correct
19 Correct 5 ms 18776 KB Output is correct
20 Correct 4 ms 18780 KB Output is correct
21 Correct 6 ms 18780 KB Output is correct
22 Correct 5 ms 19288 KB Output is correct
23 Correct 5 ms 18872 KB Output is correct
24 Correct 5 ms 19036 KB Output is correct
25 Correct 6 ms 19032 KB Output is correct
26 Correct 5 ms 19032 KB Output is correct
27 Correct 4 ms 18780 KB Output is correct
28 Correct 5 ms 19036 KB Output is correct
29 Correct 5 ms 19032 KB Output is correct
30 Correct 7 ms 19036 KB Output is correct
31 Correct 5 ms 19036 KB Output is correct
32 Correct 5 ms 19028 KB Output is correct
33 Correct 5 ms 19036 KB Output is correct
34 Correct 4 ms 18780 KB Output is correct
35 Correct 4 ms 18780 KB Output is correct
36 Correct 4 ms 18780 KB Output is correct
37 Correct 4 ms 18780 KB Output is correct
38 Correct 5 ms 18780 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 18780 KB Output is correct
2 Correct 4 ms 18780 KB Output is correct
3 Correct 4 ms 18768 KB Output is correct
4 Correct 4 ms 18780 KB Output is correct
5 Correct 4 ms 18764 KB Output is correct
6 Correct 4 ms 18620 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 4 ms 18780 KB Output is correct
9 Correct 5 ms 18780 KB Output is correct
10 Correct 4 ms 18776 KB Output is correct
11 Correct 5 ms 18780 KB Output is correct
12 Correct 4 ms 18780 KB Output is correct
13 Correct 4 ms 18780 KB Output is correct
14 Correct 4 ms 18780 KB Output is correct
15 Correct 4 ms 18780 KB Output is correct
16 Correct 4 ms 18780 KB Output is correct
17 Correct 4 ms 18780 KB Output is correct
18 Correct 4 ms 18780 KB Output is correct
19 Correct 107 ms 40684 KB Output is correct
20 Correct 104 ms 40276 KB Output is correct
21 Correct 93 ms 40516 KB Output is correct
22 Correct 92 ms 40432 KB Output is correct
23 Correct 141 ms 54292 KB Output is correct
24 Correct 106 ms 46112 KB Output is correct
25 Correct 80 ms 36176 KB Output is correct
26 Correct 43 ms 41208 KB Output is correct
27 Correct 197 ms 51472 KB Output is correct
28 Correct 234 ms 74836 KB Output is correct
29 Correct 250 ms 73956 KB Output is correct
30 Correct 159 ms 51376 KB Output is correct
31 Correct 146 ms 51404 KB Output is correct
32 Correct 223 ms 51692 KB Output is correct
33 Correct 160 ms 50256 KB Output is correct
34 Correct 292 ms 83028 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 18780 KB Output is correct
2 Correct 4 ms 18780 KB Output is correct
3 Correct 4 ms 18768 KB Output is correct
4 Correct 4 ms 18780 KB Output is correct
5 Correct 4 ms 18764 KB Output is correct
6 Correct 4 ms 18620 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 4 ms 18780 KB Output is correct
9 Correct 5 ms 18780 KB Output is correct
10 Correct 4 ms 18776 KB Output is correct
11 Correct 5 ms 18780 KB Output is correct
12 Correct 4 ms 18780 KB Output is correct
13 Correct 4 ms 18780 KB Output is correct
14 Correct 4 ms 18780 KB Output is correct
15 Correct 4 ms 18780 KB Output is correct
16 Correct 4 ms 18780 KB Output is correct
17 Correct 4 ms 18780 KB Output is correct
18 Correct 4 ms 18780 KB Output is correct
19 Correct 5 ms 18776 KB Output is correct
20 Correct 4 ms 18780 KB Output is correct
21 Correct 6 ms 18780 KB Output is correct
22 Correct 5 ms 19288 KB Output is correct
23 Correct 5 ms 18872 KB Output is correct
24 Correct 5 ms 19036 KB Output is correct
25 Correct 6 ms 19032 KB Output is correct
26 Correct 5 ms 19032 KB Output is correct
27 Correct 4 ms 18780 KB Output is correct
28 Correct 5 ms 19036 KB Output is correct
29 Correct 5 ms 19032 KB Output is correct
30 Correct 7 ms 19036 KB Output is correct
31 Correct 5 ms 19036 KB Output is correct
32 Correct 5 ms 19028 KB Output is correct
33 Correct 5 ms 19036 KB Output is correct
34 Correct 4 ms 18780 KB Output is correct
35 Correct 4 ms 18780 KB Output is correct
36 Correct 4 ms 18780 KB Output is correct
37 Correct 4 ms 18780 KB Output is correct
38 Correct 5 ms 18780 KB Output is correct
39 Correct 107 ms 40684 KB Output is correct
40 Correct 104 ms 40276 KB Output is correct
41 Correct 93 ms 40516 KB Output is correct
42 Correct 92 ms 40432 KB Output is correct
43 Correct 141 ms 54292 KB Output is correct
44 Correct 106 ms 46112 KB Output is correct
45 Correct 80 ms 36176 KB Output is correct
46 Correct 43 ms 41208 KB Output is correct
47 Correct 197 ms 51472 KB Output is correct
48 Correct 234 ms 74836 KB Output is correct
49 Correct 250 ms 73956 KB Output is correct
50 Correct 159 ms 51376 KB Output is correct
51 Correct 146 ms 51404 KB Output is correct
52 Correct 223 ms 51692 KB Output is correct
53 Correct 160 ms 50256 KB Output is correct
54 Correct 292 ms 83028 KB Output is correct
55 Correct 16 ms 21592 KB Output is correct
56 Correct 10 ms 20312 KB Output is correct
57 Correct 61 ms 39140 KB Output is correct
58 Correct 49 ms 34756 KB Output is correct
59 Correct 75 ms 47608 KB Output is correct
60 Correct 180 ms 74068 KB Output is correct
61 Correct 205 ms 54868 KB Output is correct
62 Correct 143 ms 51536 KB Output is correct
63 Correct 183 ms 51628 KB Output is correct
64 Correct 409 ms 101812 KB Output is correct
65 Correct 398 ms 102488 KB Output is correct
66 Correct 239 ms 72016 KB Output is correct
67 Correct 177 ms 51180 KB Output is correct
68 Correct 264 ms 69600 KB Output is correct
69 Correct 271 ms 69956 KB Output is correct
70 Correct 272 ms 67524 KB Output is correct