Cod sursa(job #2585141)

Utilizator ioanavasi16Vasile Ioana ioanavasi16 Data 18 martie 2020 17:45:58
Problema Stramosi Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.6 kb
#include <fstream>
using namespace std;
ifstream fin("stramosi.in");
ofstream fout("stramosi.out");
int N,M,P,Q,dp[21][250005];
int rasp(int a,int b)
{
    int nod=a;
    for(int i=1; (1<<i)<=b; i++)
        if((1<<i)&b)
            nod=dp[i][nod];
    return nod;
}
int main()
{
    fin>>N>>M;
    for(int i=1; i<=N; i++)
        fin>>dp[0][i];
    for(int i=1; i<=20; i++)
    {
        for(int j=1; j<=N; j++)
        {
            dp[i][j]=dp[i-1][dp[i-1][j]];
        }
    }
    for(int i=1; i<=M; i++)
    {
        fin>>Q>>P;
        fout<<rasp(Q,P)<<"\n";
    }
    return 0;
}