Submission #986962

#	Time	Username	Problem	Language	Result	Execution time	Memory
986962		activedeltorre	Longest Trip (IOI23_longesttrip)	C++17	25 / 100	8 ms	608 KiB

longesttrip

#include "longesttrip.h"
#include <deque>
#include <vector>
using namespace std;
int fre[100005];
deque<int>dq1;
deque<int>dq2;
vector<int>ans1,ans2;
int are_connecte(int a,int b)
{
    vector<int>pl1,pl2;
    pl1.push_back(a);
    pl2.push_back(b);
    return are_connected(pl1,pl2);
}
vector<int> longest_trip(int N, int D)
{
    int i,n=N,capst1,capdr1,capst2,capdr2;
    ans1.clear();
    ans2.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(ans1.size()>=ans2.size())
    {
        return ans1;
    }
    return ans2;
}

Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:18:22: warning: variable 'capdr1' set but not used [-Wunused-but-set-variable]
   18 |     int i,n=N,capst1,capdr1,capst2,capdr2;
      |                      ^~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 25 / 25
• Subtask 4: 0 / 60