Cod sursa(job #3237273)

Utilizator Sorin_GabrielGabara Sorin Gabriel Sorin_Gabriel Data 7 iulie 2024 22:17:09
Problema Stramosi Scor 70
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.94 kb
#include <iostream>
#include <fstream>
#include <vector>
#define VMAX 250004
using namespace std;
ifstream fin ("stramosi.in");
ofstream fout ("stramosi.out");

int stramosi[VMAX][30];


int main()
{
    ios_base::sync_with_stdio(false);
    int n,m,i,j,k,q,nr;
    fin>>n>>m;
    for(i=1;i<=n;i++)
    {
        fin>>j;
        stramosi[i][0]=j;
        for(j=1,k=0;i>j;j*=2,k++)
        {
            stramosi[i][k+1]=stramosi[stramosi[i][k]][k];
        }
    }
    while(m--)
    {
        fin>>q>>nr;
        k=0;

        while(nr)
        {
            while(nr&1==0)
                    {
                        k++;
                        nr=nr>>1;
                    }

            q=stramosi[q][k];
            if(q==0)
            {
                fout<<"0\n";
                break;
            }
            nr--;
        }
        if(nr==0)
        fout<<q<<'\n';
    }

    return 0;
}