Cod sursa(job #1976343)

Utilizator VAIonescuIonescu Vlad-Andrei VAIonescu Data 3 mai 2017 09:50:53
Problema Stramosi Scor 90
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.68 kb
#include <cstdio>
using namespace std;

const int nmax=250000;
int d[nmax+1][18];

int main(){
    freopen("stramosi.in","r",stdin);
    freopen("stramosi.out","w",stdout);
    int n,m;
    scanf("%d%d",&n,&m);
    for (register int i=1;i<=n;i++){
        scanf("%d",&d[i][0]);
    }
    for (register int j=1;j<=17;j++)
    {
        for (register int i=1;i<=n;i++){
            d[i][j]=d[d[i][j-1]][j-1];
        }
    }
    int q,p;
    for (register int t=1;t<=m;t++){
        scanf("%d%d",&q,&p);
        for (int i=0;i<=17;i++){
            if ((1<<i)&p){
                q=d[q][i];
            }
        }
        printf("%d\n",q);
    }
    return 0;
}