Cod sursa(job #2941480)

Utilizator gabriel.9619Gabriel Stefan Tita gabriel.9619 Data 17 noiembrie 2022 20:03:38
Problema Stramosi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.65 kb
#include <fstream>
using namespace std;
ifstream fin("stramosi.in");
ofstream fout("stramosi.out");
int dp[250001][19];
int main()
{
    int n, q, i, j, k, p, x;
    fin>>n>>q;
    for(i=1;i<=n;i++)
    {
        fin>>dp[i][0];
    }
    for(k=1;(1<<k)<=n;k++)
    {
        for(i=1;i<=n;i++)
        {
            dp[i][k]=dp[dp[i][k-1]][k-1];
        }
    }
    for(i=1;i<=q;i++)
    {
        fin>>p>>x;
        int s=p;
        for(k=18;k>=0;k--)
        {
            if(x>=(1<<k))
            {
                x-=(1<<k);
                s=dp[s][k];
            }
        }
        fout<<s<<"\n";
    }
    return 0;
}