This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "longesttrip.h"
using namespace std;
#define pb push_back
vector<int> longest_trip(int N, int D)
{
vector<int> ans;
vector<int> v1;
vector<int> v2;
if(N==3){
v1={0};
v2={1};
if(are_connected(v1,v2)){
v1={0};
v2={2};
if(are_connected(v1,v2)){
ans={1,0,2};
return ans;
}
else{
ans={0,1,2};
return ans;
}
}
else{
ans={0,2,1};
return ans;
}
}
ans.pb(0);
for(int i=1; i<N-1; ++i){
v1={ans[ans.size()-1]};
v2={i};
if(are_connected(v1, v2)){
ans.pb(i);
}
else{
i++;
ans.pb(i);
ans.pb(i-1);
}
}
v1={ans[ans.size()-1]};
v2={N-1};
if(are_connected(v1, v2)){
ans.pb(N-1);
}
else{
int a=ans[ans.size()-1];
ans.pop_back();
int b=ans[ans.size()-1];
ans.pop_back();
ans.pb(N-1);
ans.pb(b);
ans.pb(a);
}
return ans;
}
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