Cod sursa(job #964253)

Utilizator poptibiPop Tiberiu poptibi Data 20 iunie 2013 15:05:44
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.67 kb
#include <cstdio>
#include <cstdlib>
using namespace std;

#define Nmax 250010

int Anc[20][Nmax], N, M, Node, P;

int main()
{
    freopen("stramosi.in", "r", stdin);
    freopen("stramosi.out", "w", stdout);

    scanf("%i %i", &N, &M);
    for(int i = 1; i <= N; ++ i) scanf("%i", &Anc[0][i]);

    for(int i = 1; (1 << i) <= N; ++ i)
        for(int j = 1; j <= N; ++ j)
            Anc[i][j] = Anc[i - 1][Anc[i - 1][j]];

    for(int i = 1; i <= M; ++ i)
    {
        scanf("%i %i", &Node, &P);
        for(int j = 0; j < 20; ++ j)
            if(P & (1 << j))
                Node = Anc[j][Node];

        printf("%i\n", Node);
    }
    return 0;
}