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Cod sursa(job #219573)
#include <stdio.h>
#define dim 260000
long n, m, p, q, v[18][dim]={0}, k;
int main()
{
long i, j;
freopen("stramosi.in", "r", stdin);
freopen("stramosi.out", "w", stdout);
scanf("%ld %ld\n", &n, &m);
for (i=1; i<=n; i++) scanf("%ld ", &v[0][i]);
for (i=1; i<=17; i++)
for (j=1; j<=n; j++)
v[i][j]=v[i-1][v[i-1][j]];
for (i=0; i<m; i++)
{
scanf("%ld %ld\n", &q, &p);
while (p)
{
k=0;
while ((1<<(k+1))<=p) k++;
p-=1<<k;
q=v[k][q];
}
printf("%ld\n", q);
}
return 0;
}