Cod sursa(job #2916722)

Utilizator AndreiMargaritMargarit Andrei AndreiMargarit Data 31 iulie 2022 16:37:55
Problema Stramosi Scor 20
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.84 kb
#include <iostream>
#include <fstream>

using namespace std;

ifstream f("stramosi.in");
ofstream g("stramosi.out");

int n,m,i,j,a[20][250001],s,q,p,put,exp;

int main()
{
    f>>n>>m;
    for(i=1;i<=n;i++)
    {
        f>>a[1][i];
    }
    for(i=2;i<=19;i++)
    {
        for(j=1;j<=n;j++)
        {
            s=a[i-1][j];
            a[i][j]=a[i-1][s];
        }
    }
    for(i=1;i<=m;i++)
    {
        f>>q>>p;
        put=1;
        exp=0;
        while(put*2<p)
        {
            put=put*2;
            exp++;
        }
        p=p-put;
        q=a[exp+1][q];
        while(p>0)
        {
            while(put/2>=p)
            {
                put=put/2;
                exp--;
            }
            p=p-put;
            q=a[exp+1][q];
        }
        g<<q<<endl;
    }
    return 0;
}