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Submission #986974

# Submission time Handle Problem Language Result Execution time Memory
986974 2024-05-21T16:28:14 Z activedeltorre Longest Trip (IOI23_longesttrip) C++17
15 / 100
 9 ms 600 KB 
#include "longesttrip.h"
#include <deque>
#include <vector>
#include <algorithm>
using namespace std;
int fre[100005];
deque<int>dq1;
deque<int>dq2;
vector<int>ans1,ans2;
vector<int>raspuns;
int are_connecte(int a,int b)
{
    vector<int>pl1,pl2;
    pl1.push_back(a);
    pl2.push_back(b);
    return are_connected(pl1,pl2);
}
void solus(int kuk,int pz2)
{
    int pen,i;
    for(i=0;i<ans1.size();i++)
    {
        if(are_connecte(kuk,ans1[i]))
        {
            pen=i;
            break;
        }
    }
    for(i=pen-1;i>=0;i--)
    {
        raspuns.push_back(ans1[i]);
    }
    for(i=ans1.size()-1;i>=pen;i--)
    {
        raspuns.push_back(ans1[i]);
    }
    for(i=pz2;i>=0;i--)
    {
        raspuns.push_back(ans2[i]);
    }
    for(i=ans2.size()-1;i>pz2;i--)
    {
        raspuns.push_back(ans2[i]);
    }
}
vector<int> longest_trip(int N, int D)
{
    int i,n=N,capst1,capdr1,capst2,capdr2;
    ans1.clear();
    ans2.clear();
    raspuns.clear();
    if(are_connecte(0,1)==1)
    {
        capst1=0;
        capdr1=1;
        dq1.push_front(1);
        dq1.push_front(0);
    }
    else
    {
        capst1=0;
        capdr1=0;
        capst2=1;
        capdr2=1;
        dq2.push_front(1);
        dq1.push_front(0);
    }
    for(i=2;i<n;i++)
    {
        if(dq2.size()==0)
        {
            capst2=i;
            capdr2=i;
            dq2.push_front(i);
        }
        else
        {
            if(are_connecte(i,capst1)==1)
            {
                capst1=i;
                dq1.push_front(i);
            }
            else if(are_connecte(i,capst2)==1)
            {
                capst2=i;
                dq2.push_front(i);
            }
            else
            {
                capst1=capdr2;
                while(dq2.size())
                {
                    dq1.push_front(dq2.front());
                    dq2.pop_front();
                }
                capst2=i;
                capdr2=i;
                dq2.push_front(i);
            }
        }
    }
    while(dq1.size())
    {
        ans1.push_back(dq1.front());
        dq1.pop_front();
    }
    while(dq2.size())
    {
        ans2.push_back(dq2.front());
        dq2.pop_front();
    }
    if(ans2.size()>ans1.size())
    {
        swap(ans1,ans2);
    }
    if(are_connected(ans1,ans2)==0)
    {
        return ans1;
    }
    else
    {
        int a,b,c,d;
        a=ans1[0];
        b=ans1.back();
        c=ans2[0];
        if(are_connecte(a,c)==1)
        {
            reverse(ans1.begin(),ans1.end());
            for(i=0;i<ans2.size();i++)
            {
                ans1.push_back(ans2[i]);
            }
            return ans1;
        }
        else if(are_connecte(b,c)==1)
        {
            for(i=0;i<ans2.size();i++)
            {
                ans1.push_back(ans2[i]);
            }
            return ans1;
        }
        else
        {
            vector<int>pl2;
            if(ans2.size()>=2)
            {
                d=ans2.back();
                if(are_connecte(a,d))
                {
                    for(i=0;i<ans1.size();i++)
                    {
                        ans2.push_back(ans1[i]);
                    }
                    return ans2;
                }
                int st=0,dr=ans2.size()-1;
                while(st<=dr)
                {
                    pl2.clear();
                    int mij=(st+dr)/2;
                    for(i=0;i<=mij;i++)
                    {
                        pl2.push_back(ans2[i]);
                    }
                    if(are_connected(pl2,ans1)==1)
                    {
                        dr=mij-1;
                    }
                    else
                    {
                        st=mij+1;
                    }
                }
                solus(ans2[dr+1],dr+1);
                /*
                for(i=0;i<ans2.size();i++)
                {
                    pl2.clear();
                    pl2.push_back(ans2[i]);
                    if(are_connected(pl2,ans1))
                    {
                        solus(ans2[i],i);
                        return raspuns;
                    }
                }*/
            }
            else
            {
                solus(ans2[0],0);
                return raspuns;
            }
        }
    }
}

Compilation message

longesttrip.cpp: In function 'void solus(int, int)':
longesttrip.cpp:21:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(i=0;i<ans1.size();i++)
      |             ~^~~~~~~~~~~~
longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:129:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  129 |             for(i=0;i<ans2.size();i++)
      |                     ~^~~~~~~~~~~~
longesttrip.cpp:137:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  137 |             for(i=0;i<ans2.size();i++)
      |                     ~^~~~~~~~~~~~
longesttrip.cpp:151:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  151 |                     for(i=0;i<ans1.size();i++)
      |                             ~^~~~~~~~~~~~
longesttrip.cpp:48:22: warning: variable 'capdr1' set but not used [-Wunused-but-set-variable]
   48 |     int i,n=N,capst1,capdr1,capst2,capdr2;
      |                      ^~~~~~
longesttrip.cpp:195:1: warning: control reaches end of non-void function [-Wreturn-type]
  195 | }
      | ^
longesttrip.cpp: In function 'void solus(int, int)':
longesttrip.cpp:29:10: warning: 'pen' may be used uninitialized in this function [-Wmaybe-uninitialized]
   29 |     for(i=pen-1;i>=0;i--)
      |         ~^~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 600 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 340 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 344 KB Output is correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 7 ms 344 KB Output is correct
8 Correct 5 ms 344 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 5 ms 436 KB Output is correct
11 Correct 5 ms 444 KB Output is correct
12 Correct 4 ms 444 KB Output is correct
13 Correct 5 ms 436 KB Output is correct

Subtask #3
0.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 344 KB Output is correct
6 Correct 7 ms 344 KB Output is correct
7 Correct 7 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 4 ms 344 KB Output is correct
10 Correct 5 ms 436 KB Output is correct
11 Correct 5 ms 436 KB Output is correct
12 Correct 4 ms 444 KB Output is correct
13 Correct 4 ms 440 KB Output is correct
14 Correct 7 ms 344 KB Output is correct
15 Correct 7 ms 344 KB Output is correct
16 Runtime error 1 ms 444 KB Execution killed with signal 6
17 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 340 KB Output is correct
2 Correct 8 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 4 ms 344 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 5 ms 344 KB Output is correct
8 Correct 5 ms 344 KB Output is correct
9 Correct 5 ms 600 KB Output is correct
10 Correct 6 ms 344 KB Output is correct
11 Correct 5 ms 440 KB Output is correct
12 Correct 5 ms 440 KB Output is correct
13 Correct 5 ms 600 KB Output is correct
14 Correct 7 ms 344 KB Output is correct
15 Correct 6 ms 344 KB Output is correct
16 Runtime error 1 ms 344 KB Execution killed with signal 6
17 Halted 0 ms 0 KB -