oj.uz

답안 #322510

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
322510 2020-11-14T18:49:25 Z lukameladze 꿈 (IOI13_dreaming) C++14
18 / 100
 385 ms 34436 KB 
#include <stdio.h>
#include <stdlib.h>
#include <bits/stdc++.h>
using namespace std;
#include "dreaming.h"
long long ww,lv[300005],lv1[300005],mx,vert,fix[300005],x1,x2,x,y;
std::vector <long long> v[300005],vv,ans;
map < pair <long long, long long > , long long > mp; 
void dfs(int a, int p)
{
    fix[a]=1;
     if (ww==1) vv.push_back(a);
     if (p!=-1)
     lv[a]=lv[p]+mp[{a,p}];
     else lv[a]=0;
     if (lv[a]>mx)
     {
          vert=a;
          mx=lv[a];
     }
     for (int i=0; i<v[a].size(); i++) 
     {
          if (v[a][i]!=p)
          {
               dfs(v[a][i],a);
          }
     }
}
void dfs1(int a, int p)
{
     if (p!=-1)
     lv1[a]=lv1[p]+mp[{a,p}];
     else lv1[a]=0;
     for (int i=0; i<v[a].size(); i++)
     {
          if (v[a][i]!=p)
          {
               dfs1(v[a][i],a);
          }
     }
}
int travelTime(int N, int M, int L, int A[], int B[], int T[]) 
{
    /*cin>>N>>M>>L;
    for (int i=0; i<M; i++)
    {
        cin>>A[i];
    }
    for (int i=0; i<M; i++)
    {
        cin>>B[i];
    }
    for (int i=0; i<M; i++)
    {
        cin>>T[i];
    }*/
     for (int i=0; i<M; i++)
     {
          mp[{A[i],B[i]}]=T[i];
          mp[{B[i],A[i]}]=T[i];
          v[A[i]].push_back(B[i]);
          v[B[i]].push_back(A[i]);
     }

     for (int i=0; i<N; i++)
     {
            mx=0;
          if (!fix[i])
          {
              //cout<<i<<"   s"<<endl;
               vv.clear();
             //  cout<<i<<endl<<endl;
               ww=1;
               dfs(i,-1);
               x1=vert;
             //  cout<<lv[9]<<" "<<lv[3]<<" "<<lv[5]<<" "<<lv[11]<<endl;
               ww=0;
               mx=0;
               dfs(x1,-1);
              // cout<<x1<<"   h "<<lv[0]<<endl;
               
               x2=vert;
               dfs1(x2,-1);
               //cout<<lv[8]<<"    "<<lv1[8]<<endl;
               x=1e9;
              // cout<<x1<<"    s    "<<x2<<endl;
               for (int j=0; j<vv.size(); j++)
               {
                //   cout<<vv[j]<<" "<<lv[vv[j]]<<"   "<<lv1[vv[j]]<<endl;
                    y=max(lv[vv[j]], lv1[vv[j]]);
                    x=min(x, y);
               }
               ans.push_back(x);
               //cout<<x<<endl;
          }
     }
     sort(ans.begin(), ans.end());
     reverse(ans.begin(), ans.end());
    // cout<<endl;
     if (ans.size()>=3)
     {
          return max(ans[1]+ans[2]+2*L, ans[0]+ans[1]+L);
     }
     if (ans.size()>=2)
     {
          return ans[0]+ans[1]+L;
     }
     return 0;
}

Compilation message

dreaming.cpp: In function 'void dfs(int, int)':
dreaming.cpp:21:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |      for (int i=0; i<v[a].size(); i++)
      |                    ~^~~~~~~~~~~~
dreaming.cpp: In function 'void dfs1(int, int)':
dreaming.cpp:34:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |      for (int i=0; i<v[a].size(); i++)
      |                    ~^~~~~~~~~~~~
dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:87:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   87 |                for (int j=0; j<vv.size(); j++)
      |                              ~^~~~~~~~~~

Subtask #1
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 385 ms 34436 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 385 ms 34436 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 385 ms 34436 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 92 ms 16488 KB Output is correct
2 Correct 100 ms 17008 KB Output is correct
3 Correct 118 ms 16872 KB Output is correct
4 Correct 105 ms 16932 KB Output is correct
5 Correct 103 ms 16872 KB Output is correct
6 Correct 117 ms 17892 KB Output is correct
7 Correct 113 ms 17436 KB Output is correct
8 Correct 96 ms 16752 KB Output is correct
9 Correct 89 ms 16796 KB Output is correct
10 Correct 108 ms 17296 KB Output is correct
11 Correct 5 ms 7404 KB Output is correct
12 Correct 20 ms 10852 KB Output is correct
13 Correct 19 ms 10988 KB Output is correct
14 Correct 17 ms 10724 KB Output is correct
15 Correct 18 ms 10856 KB Output is correct
16 Correct 16 ms 10596 KB Output is correct
17 Correct 15 ms 10080 KB Output is correct
18 Correct 18 ms 10980 KB Output is correct
19 Correct 16 ms 10724 KB Output is correct
20 Correct 6 ms 7404 KB Output is correct
21 Correct 5 ms 7404 KB Output is correct
22 Correct 5 ms 7532 KB Output is correct
23 Correct 16 ms 10724 KB Output is correct

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 385 ms 34436 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 385 ms 34436 KB Output isn't correct
2 Halted 0 ms 0 KB -