Cod sursa(job #1255268)

Utilizator Tac12345Tac Boss Tac12345 Data 4 noiembrie 2014 16:40:01
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.64 kb
#include <cstdio>
using namespace std;
int d[20][250005];
int main()
{
    freopen("stramosi.in","r",stdin);
    freopen("stramosi.out","w",stdout);
    int n,m,a,b,i,j,num;
    scanf("%d%d",&n,&m);
    for(i=1; i<=n; ++i)
        scanf("%d",&d[0][i]);
    for(i=1; i<=17; ++i) /// 2^17<250000 si 2^18>250000
        for(j=1; j<=n; ++j)
            d[i][j]=d[i-1][d[i-1][j]];
    for(i=1; i<=m; ++i)
    {
        scanf("%d%d",&a,&b);
        num=0;
        while(b>0)
        {
            if (b&1)
                a=d[num][a];
            ++num;
            b>>=1;
        }
        printf("%d\n",a);
    }
    return 0;
}