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Cod sursa(job #3671)
#include <cstdio>
#include <cmath>
#define FIN "stramosi.in"
#define FOUT "stramosi.out"
#define n_max 300000
long t[20][n_max], n, m, i, j, p, q, poz, max;
int main () {
freopen(FIN, "r", stdin);
freopen(FOUT, "w", stdout);
scanf("%ld %ld", &n, &m);
for (i=1; i<=n; i++) scanf("%ld", &t[0][i]);
max = (long) (floor(log2((double)(n))));
for (i=1; i<=max; i++)
for (j=1; j<=n; j++)
t[i][j] = t[i-1][t[i-1][j]];
for (i=1; i<=m; i++) {
scanf("%ld %ld", &q, &p);
poz = max;
while (p) {
if (p & (1<<poz)) {
q = t[poz][q];
p -= (1<<poz);
}
poz--;
}
printf("%ld\n", q);
}
return 0;
}