Cod sursa(job #2213214)

Utilizator alisavaAlin Sava alisava Data 15 iunie 2018 19:34:36
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.73 kb
#include <bits/stdc++.h>

using namespace std;

ifstream fin("stramosi.in");
ofstream fout("stramosi.out");
int a[20][250005];
int n,m,mmax;
void Prec()
{
    for(int i=1;i<=n;i++)
        fin>>a[0][i];
    for(int i=1;i<=mmax;i++)
        for(int j=1;j<=n;j++)
        {
            a[i][j]=a[i-1][a[i-1][j]];
        }
}
void Query(int q,int p)
{
    for(int i=mmax;i>=0;i--)
    {
        if(p&(1<<i))
        {
            q=a[i][q];
            p=p-(1<<i);

        }
    }
    fout<<q<<"\n";
}


int main()
{
    int p,q;
    fin>>n>>m;
    mmax=1;
    while(n>(1<<mmax))
        mmax++;
    Prec();
    for(int i=1;i<=m;i++)
    {
        fin>>q>>p;
        Query(q,p);
    }


    return 0;
}