Cod sursa(job #672331)

Utilizator tudgal1001Profir Tudor tudgal1001 Data 1 februarie 2012 21:16:13
Problema Stramosi Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.59 kb
#include<cstdio>
#include<cmath>
using namespace std;

int a[20][250005];

int main ()
{
    int i,n,m,j,p,q,rasp,max;
    freopen("stramosi.in","r",stdin);
    freopen("stramosi.out","w",stdout);
    scanf("%d%d",&n,&m);
    for (i=1; i<=n; i++)
        scanf("%d",&a[0][i]);
    for (i=1; i<=18; i++)
        for (j=1; j<=n; j++)
            a[i][j]=a[i-1][a[i-1][j]];
    for (i=1; i<=m; i++)
    {
        scanf("%d%d",&q,&p);
        rasp=q; max=log2(p);
        for (j=max; j>=0; j--)
            if (p & (1<<j))
                rasp=a[j][rasp];
        printf("%d\n",rasp);
    }
    return 0;
}