Pagini recente » Cod sursa (job #50272) | Cod sursa (job #2423480) | Borderou de evaluare (job #1731288) | Borderou de evaluare (job #1532012) | Cod sursa (job #3231714)
#include <iostream>
#include <algorithm>
#include <fstream>
using namespace std;
#define DMAX 250003
int D[19][DMAX], l2[DMAX];
int main () {
ifstream fin("stramosi.in");
ofstream fout("stramosi.out");
int n, m, i, j, x, y;
fin >> n >> m;
for (int i = 1; i <= n; ++i)
{
fin >> D[0][i];
l2[i + 1] = l2[(i + 1) >> 1] + 1;
}
for (int i = 1; (1 << i) <= n; ++i)
{
for (int j = 1; j <= n; ++j)
{
D[i][j] = D[i - 1][D[i - 1][j]];
}
}
while (m--)
{
fin >> x >> y;
while (y)
{
x = D[l2[y]][x];
y -= 1 << l2[y];
}
fout << x << "\n";
}
fin.close();
fout.close();
return 0;
}