Cod sursa(job #2568016)

Utilizator AndreiDeltaBalanici Andrei Daniel AndreiDelta Data 3 martie 2020 20:15:29
Problema Stramosi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.63 kb
#include <bits/stdc++.h>
#define Dim 250001
using namespace std;
ifstream f("stramosi.in");
ofstream g("stramosi.out");
int N,M,P,Q,x,rmq[20][Dim];

int main()
{
    f>>N>>M;
    for(int i=1;i<=N;i++)
    {
        f>>x;
        rmq[0][i]=x;
    }

    for(int i=1;i<=log2(N);i++)
    for(int j=1;j<=N;j++)
    rmq[i][j]=rmq[i-1][rmq[i-1][j]];

    for(int i=1;i<=M;i++)
    {
        f>>Q>>P;
        int nod=Q;
        while(P)
        {
            int poz = P & -P;
            P&=P-1;
            int dif=log2(poz);
            nod=rmq[dif][nod];
        }
        g<<nod<<'\n';
    }

    return 0;
}