Cod sursa(job #2503051)

Utilizator ancaoxoxSfia Anca ancaoxox Data 2 decembrie 2019 11:21:33
Problema Stramosi Scor 90
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.67 kb
#include <cstdio>
#include <cmath>

using namespace std;

int strm[20][250005], v[19], rng[250000];

int main()
{

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


    int n, m, i, j, k, p, q, maxx, x;
    scanf("%d%d",&n,&m);
    for (i=1; i<=n; i++)
    scanf("%d", &strm[0][i]);

    for (j=1; j<=log2(n); j++)
    {
        for (i=1; i<=n; i++)
        strm[j][i]=strm[j-1][strm[j-1][i]];
    }

    for (i=1; i<=m; i++)
    {
        scanf("%d%d", &p, &q);
        for (j=0; j<=18; j++)
        {
            if(q&(1<<j))
                p=strm[j][p];
        }
        printf("%d\n",p);


    }



    return 0;
}