Cod sursa(job #2488119)

Utilizator AndreiTudorSpiruAndrei Spiru AndreiTudorSpiru Data 6 noiembrie 2019 10:02:33
Problema Stramosi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.62 kb
#include <fstream>

using namespace std;
ifstream f("stramosi.in");
ofstream g("stramosi.out");
int n,m,a[50][250001],log[250001],i,j,q,p;
int main()
{
    f>>n>>m;
    for(i=1; i<=n; i++)
    {
        f>>a[0][i];
    }
    for(i=1; (1<<i)<=n; i++)
        for(j=1; j<=n; j++)
        {
            a[i][j]=a[i-1][a[i-1][j]];
        }
    for(i=2; i<=n; i++)
        log[i]=log[i/2]+1;
    for(i=1;i<=m;i++)
    {
        f>>q>>p;
        int ans;
        while(p>0)
        {
            int x=log[p];
            q=a[x][q];
            p-=(1<<x);
        }
        g<<q<<'\n';
    }
    return 0;
}