제출 #69325

#제출 시각아이디문제언어결과실행 시간메모리
69325Bodo171popa (BOI18_popa)C++14
100 / 100
111 ms700 KiB
#include "popa.h"
#include <iostream>
using namespace std;
const int nmax=1005;
int st[nmax];
int u,i;
int solve(int N, int* Left, int* Right)
{
    int root=0;
    u=0;
    for(i=0;i<N;i++)
    {
        Left[i]=Right[i]=-1;
        while(u&&query(st[u],i,i,i))
        {
            Right[st[u]]=Left[i];
            Left[i]=st[u];
            u--;
        }
        if(u) Right[st[u]]=i;
        else root=i;
        st[++u]=i;
    }
    return root;
}
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