oj.uz

답안 #204900

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
204900 2020-02-27T12:31:58 Z mdn2002 경주 (Race) (IOI11_race) C++14
100 / 100
 579 ms 106324 KB 
#include <bits/stdc++.h>
#include "race.h"
using namespace std;


long long n,k,dp[200500],siz[200500],dis[200500];
long long mn=1e9;
vector<pair<long long,long long> >gr[200500];
multiset<pair<long long,long long> >v[200500];
multiset<pair<long long,long long> >::iterator it;
void cal(int x,int p)
{
    dp[x]=dp[p]+1;
    siz[x]++;
    for(int i=0; i<gr[x].size(); i++)
    {
        long long u=gr[x][i].first,w=gr[x][i].second;
        if(u==p)continue;
        dis[u]=dis[x]+w;
        cal(u,x);
        siz[x]+=siz[u];
    }
}
void dfs(int x,int p)
{
    long long big=0,mx=-1;
    for(int i=0; i<gr[x].size(); i++)
    {
        long long u=gr[x][i].first;
        if(u==p)continue;
        if(mx<siz[u])
        {
            mx=siz[u];
            big=u;
        }
    }
    if(mx!=-1)dfs(big,x);
    swap(v[big],v[x]);
    v[x].insert({dis[x],dp[x]});
    pair<long long,long long>zz=*v[x].lower_bound(make_pair(k+dis[x],0ll));
    if(zz.first==k+dis[x]&&v[x].lower_bound(make_pair(k+dis[x],0ll))!=v[x].end())
    {
        long long add=zz.second-dp[x];
        mn=min(mn,add);
    }
    for(int i=0; i<gr[x].size(); i++)
    {
        long long u=gr[x][i].first;
        if(u==p||u==big)continue;
        dfs(u,x);
    }
    for(int i=0; i<gr[x].size(); i++)
    {
        long long u=gr[x][i].first;
        if(u==p||u==big)continue;
        for(it=v[u].begin(); it!=v[u].end(); it++)
        {
            pair<long long,long long>z=*it;
            long long dd=(k-z.first)+(2*dis[x]),add=z.second-dp[x];
            pair<long long,long long>zz=*v[x].lower_bound(make_pair(dd,0ll));
            if(zz.first+z.first==k+(2*dis[x])&&v[x].lower_bound(make_pair(dd,0ll))!=v[x].end())
            {
                long long add1=zz.second-dp[x];
                mn=min(mn,add1+add);
            }
        }
        for(it=v[u].begin(); it!=v[u].end(); it++)v[x].insert(*it);
    }
}
int best_path(int N, int K, int H[][2], int L[])
{
    n=N,k=K;
    for(int i=0; i<n-1; i++)
    {
        int x=H[i][0]+1,y=H[i][1]+1;
        gr[x].push_back({y,L[i]});
        gr[y].push_back({x,L[i]});
    }
    cal(1,0);
    dfs(1,0);
    if(mn!=1e9)return mn;
    else return -1;
}

Compilation message

race.cpp: In function 'void cal(int, int)':
race.cpp:15:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<gr[x].size(); i++)
                  ~^~~~~~~~~~~~~
race.cpp: In function 'void dfs(int, int)':
race.cpp:27:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<gr[x].size(); i++)
                  ~^~~~~~~~~~~~~
race.cpp:46:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<gr[x].size(); i++)
                  ~^~~~~~~~~~~~~
race.cpp:52:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<gr[x].size(); i++)
                  ~^~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 14456 KB Output is correct
2 Correct 14 ms 14456 KB Output is correct
3 Correct 14 ms 14456 KB Output is correct
4 Correct 14 ms 14456 KB Output is correct
5 Correct 14 ms 14456 KB Output is correct
6 Correct 14 ms 14456 KB Output is correct
7 Correct 14 ms 14584 KB Output is correct
8 Correct 14 ms 14460 KB Output is correct
9 Correct 15 ms 14456 KB Output is correct
10 Correct 13 ms 14456 KB Output is correct
11 Correct 14 ms 14456 KB Output is correct
12 Correct 14 ms 14456 KB Output is correct
13 Correct 14 ms 14456 KB Output is correct
14 Correct 16 ms 14456 KB Output is correct
15 Correct 14 ms 14456 KB Output is correct
16 Correct 14 ms 14456 KB Output is correct
17 Correct 14 ms 14456 KB Output is correct
18 Correct 14 ms 14456 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 14456 KB Output is correct
2 Correct 14 ms 14456 KB Output is correct
3 Correct 14 ms 14456 KB Output is correct
4 Correct 14 ms 14456 KB Output is correct
5 Correct 14 ms 14456 KB Output is correct
6 Correct 14 ms 14456 KB Output is correct
7 Correct 14 ms 14584 KB Output is correct
8 Correct 14 ms 14460 KB Output is correct
9 Correct 15 ms 14456 KB Output is correct
10 Correct 13 ms 14456 KB Output is correct
11 Correct 14 ms 14456 KB Output is correct
12 Correct 14 ms 14456 KB Output is correct
13 Correct 14 ms 14456 KB Output is correct
14 Correct 16 ms 14456 KB Output is correct
15 Correct 14 ms 14456 KB Output is correct
16 Correct 14 ms 14456 KB Output is correct
17 Correct 14 ms 14456 KB Output is correct
18 Correct 14 ms 14456 KB Output is correct
19 Correct 14 ms 14456 KB Output is correct
20 Correct 14 ms 14456 KB Output is correct
21 Correct 15 ms 14712 KB Output is correct
22 Correct 17 ms 14712 KB Output is correct
23 Correct 15 ms 14712 KB Output is correct
24 Correct 15 ms 14712 KB Output is correct
25 Correct 17 ms 14712 KB Output is correct
26 Correct 15 ms 14716 KB Output is correct
27 Correct 15 ms 14712 KB Output is correct
28 Correct 15 ms 14712 KB Output is correct
29 Correct 15 ms 14712 KB Output is correct
30 Correct 16 ms 14716 KB Output is correct
31 Correct 15 ms 14712 KB Output is correct
32 Correct 17 ms 14716 KB Output is correct
33 Correct 16 ms 14712 KB Output is correct
34 Correct 15 ms 14712 KB Output is correct
35 Correct 15 ms 14712 KB Output is correct
36 Correct 16 ms 14712 KB Output is correct
37 Correct 14 ms 14712 KB Output is correct
38 Correct 15 ms 14712 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 14456 KB Output is correct
2 Correct 14 ms 14456 KB Output is correct
3 Correct 14 ms 14456 KB Output is correct
4 Correct 14 ms 14456 KB Output is correct
5 Correct 14 ms 14456 KB Output is correct
6 Correct 14 ms 14456 KB Output is correct
7 Correct 14 ms 14584 KB Output is correct
8 Correct 14 ms 14460 KB Output is correct
9 Correct 15 ms 14456 KB Output is correct
10 Correct 13 ms 14456 KB Output is correct
11 Correct 14 ms 14456 KB Output is correct
12 Correct 14 ms 14456 KB Output is correct
13 Correct 14 ms 14456 KB Output is correct
14 Correct 16 ms 14456 KB Output is correct
15 Correct 14 ms 14456 KB Output is correct
16 Correct 14 ms 14456 KB Output is correct
17 Correct 14 ms 14456 KB Output is correct
18 Correct 14 ms 14456 KB Output is correct
19 Correct 282 ms 58376 KB Output is correct
20 Correct 265 ms 57624 KB Output is correct
21 Correct 278 ms 59000 KB Output is correct
22 Correct 260 ms 54392 KB Output is correct
23 Correct 282 ms 72312 KB Output is correct
24 Correct 230 ms 58616 KB Output is correct
25 Correct 167 ms 40184 KB Output is correct
26 Correct 106 ms 44624 KB Output is correct
27 Correct 374 ms 63480 KB Output is correct
28 Correct 333 ms 74616 KB Output is correct
29 Correct 338 ms 73336 KB Output is correct
30 Correct 357 ms 63224 KB Output is correct
31 Correct 381 ms 63240 KB Output is correct
32 Correct 429 ms 63224 KB Output is correct
33 Correct 422 ms 77688 KB Output is correct
34 Correct 406 ms 75768 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 14456 KB Output is correct
2 Correct 14 ms 14456 KB Output is correct
3 Correct 14 ms 14456 KB Output is correct
4 Correct 14 ms 14456 KB Output is correct
5 Correct 14 ms 14456 KB Output is correct
6 Correct 14 ms 14456 KB Output is correct
7 Correct 14 ms 14584 KB Output is correct
8 Correct 14 ms 14460 KB Output is correct
9 Correct 15 ms 14456 KB Output is correct
10 Correct 13 ms 14456 KB Output is correct
11 Correct 14 ms 14456 KB Output is correct
12 Correct 14 ms 14456 KB Output is correct
13 Correct 14 ms 14456 KB Output is correct
14 Correct 16 ms 14456 KB Output is correct
15 Correct 14 ms 14456 KB Output is correct
16 Correct 14 ms 14456 KB Output is correct
17 Correct 14 ms 14456 KB Output is correct
18 Correct 14 ms 14456 KB Output is correct
19 Correct 14 ms 14456 KB Output is correct
20 Correct 14 ms 14456 KB Output is correct
21 Correct 15 ms 14712 KB Output is correct
22 Correct 17 ms 14712 KB Output is correct
23 Correct 15 ms 14712 KB Output is correct
24 Correct 15 ms 14712 KB Output is correct
25 Correct 17 ms 14712 KB Output is correct
26 Correct 15 ms 14716 KB Output is correct
27 Correct 15 ms 14712 KB Output is correct
28 Correct 15 ms 14712 KB Output is correct
29 Correct 15 ms 14712 KB Output is correct
30 Correct 16 ms 14716 KB Output is correct
31 Correct 15 ms 14712 KB Output is correct
32 Correct 17 ms 14716 KB Output is correct
33 Correct 16 ms 14712 KB Output is correct
34 Correct 15 ms 14712 KB Output is correct
35 Correct 15 ms 14712 KB Output is correct
36 Correct 16 ms 14712 KB Output is correct
37 Correct 14 ms 14712 KB Output is correct
38 Correct 15 ms 14712 KB Output is correct
39 Correct 282 ms 58376 KB Output is correct
40 Correct 265 ms 57624 KB Output is correct
41 Correct 278 ms 59000 KB Output is correct
42 Correct 260 ms 54392 KB Output is correct
43 Correct 282 ms 72312 KB Output is correct
44 Correct 230 ms 58616 KB Output is correct
45 Correct 167 ms 40184 KB Output is correct
46 Correct 106 ms 44624 KB Output is correct
47 Correct 374 ms 63480 KB Output is correct
48 Correct 333 ms 74616 KB Output is correct
49 Correct 338 ms 73336 KB Output is correct
50 Correct 357 ms 63224 KB Output is correct
51 Correct 381 ms 63240 KB Output is correct
52 Correct 429 ms 63224 KB Output is correct
53 Correct 422 ms 77688 KB Output is correct
54 Correct 406 ms 75768 KB Output is correct
55 Correct 35 ms 17784 KB Output is correct
56 Correct 30 ms 18168 KB Output is correct
57 Correct 252 ms 74488 KB Output is correct
58 Correct 123 ms 36296 KB Output is correct
59 Correct 102 ms 46028 KB Output is correct
60 Correct 311 ms 76792 KB Output is correct
61 Correct 377 ms 66424 KB Output is correct
62 Correct 353 ms 66296 KB Output is correct
63 Correct 458 ms 66332 KB Output is correct
64 Correct 579 ms 106324 KB Output is correct
65 Correct 546 ms 99192 KB Output is correct
66 Correct 339 ms 73464 KB Output is correct
67 Correct 350 ms 59380 KB Output is correct
68 Correct 443 ms 67832 KB Output is correct
69 Correct 445 ms 68344 KB Output is correct
70 Correct 419 ms 65660 KB Output is correct