oj.uz

Submission #322545

# Submission time Handle Problem Language Result Execution time Memory
322545 2020-11-14T19:01:58 Z lukameladze Dreaming (IOI13_dreaming) C++14
18 / 100
 354 ms 35556 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[]) 
{
	for (int i=0; i<=1e5; i++)
	v[i].clear();
	ans.clear();
     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])
          {
               vv.clear();
               ww=1;
               dfs(i,-1);
               x1=vert;
               ww=0;
               mx=0;
               dfs(x1,-1);
               x2=vert;
               dfs1(x2,-1);
               x=1e10;
               for (int j=0; j<vv.size(); j++)
               {
                    y=max(lv[vv[j]], lv1[vv[j]]);
                    x=min(x, y);
               }
               ans.push_back(x);
          }
     }
     sort(ans.begin(), ans.end());
     reverse(ans.begin(), ans.end());
     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:70:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |                for (int j=0; j<vv.size(); j++)
      |                              ~^~~~~~~~~~

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 354 ms 35556 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 354 ms 35556 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 354 ms 35556 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 16872 KB Output is correct
2 Correct 98 ms 16880 KB Output is correct
3 Correct 93 ms 16872 KB Output is correct
4 Correct 96 ms 16872 KB Output is correct
5 Correct 92 ms 16872 KB Output is correct
6 Correct 98 ms 17892 KB Output is correct
7 Correct 107 ms 17384 KB Output is correct
8 Correct 93 ms 16752 KB Output is correct
9 Correct 89 ms 16616 KB Output is correct
10 Correct 102 ms 17132 KB Output is correct
11 Correct 6 ms 7404 KB Output is correct
12 Correct 17 ms 10852 KB Output is correct
13 Correct 17 ms 10988 KB Output is correct
14 Correct 17 ms 10724 KB Output is correct
15 Correct 17 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 6 ms 7404 KB Output is correct
22 Correct 6 ms 7532 KB Output is correct
23 Correct 17 ms 10724 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 354 ms 35556 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 354 ms 35556 KB Output isn't correct
2 Halted 0 ms 0 KB -