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 <bits/stdc++.h>
#include "popa.h"
using namespace std;
int root;
void sol(int i,int n,int* Left,int* Right)
{
if(i==n-1)
return;
if(query(i,i,i,i+1)){
Right[i]=i+1;
sol(i+1,n,Left,Right);
}
else{
Left[i+1]=root;
root=i+1;
sol(i+1,n,Left,Right);
}
}
int solve(int n,int* Left,int* Right)
{
for(int i=0;i<n;i++)
{
Left[i]=-1;
Right[i]=-1;
}
root=-1;
sol(0,n,Left,Right);
return root;
}
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