Pagini recente » Cod sursa (job #1405473) | Cod sursa (job #3165223) | Cod sursa (job #1393240) | Cod sursa (job #2340016) | Cod sursa (job #2507827)
#include <bits/stdc++.h>
#define N 250005
#define lg 17
using namespace std;
int n, m;
int dp[N][20];
void calcDp()
{
for (int k = 1; k <= lg; k++)
{
for (int nod = 1; nod <= n; nod++)
dp[nod][k] = dp[dp[nod][k - 1]][k - 1];
}
}
int Query(int nod, int p)
{
int nodAns = nod;
for (int i = 0; i <= lg; i++)
{
if (p & (1 << i))
nodAns = dp[nodAns][i];
}
return nodAns;
}
int main()
{
freopen("stramosi.in", "r", stdin);
freopen("stramosi.out", "w", stdout);
scanf("%d%d", &n, &m);
for (int i = 1; i <= n; i++)
{
int x;
scanf("%d", &x);
dp[i][0] = x;
}
calcDp();
for (int i = 1; i <= m; i++)
{
int q, p;
scanf("%d%d", &q, &p);
printf("%d\n", Query(q, p));
}
return 0;
}