Cod sursa(job #2357286)

Utilizator SpatialARTNuna David SpatialART Data 27 februarie 2019 11:35:33
Problema Stramosi Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.74 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("stramosi.in");
ofstream g("stramosi.out");
int N,M,Q,P;
int x,v[25][250005],rez;
int main()
{
    f>>N>>M;
    for(int i=1; i<=N; i++)
    {
        f>>x;
        v[0][i]=x;
    }
    for(int i=1; i<=18; i++)
        for(int j=1; j<=N; j++)
            if(v[i-1][j] and (1<<i)<=N)
        v[i][j]=v[i-1][v[i-1][j]];
    /*for(int i=0; (1<<i)<=N; i++)
    {
        cout<<i<<endl;
        for(int j=1; j<=N; j++)
            cout<<v[i][j]<<" ";
        cout<<endl;
    }*/
    for(int i=1; i<=M; i++)
    {
        f>>Q>>P;
        for(int j=0; j<=18; j++)
        {
        if ((1<<j) & P)
        Q=v[j][Q];
        }
        g<<Q<<"\n";
    }
}