Pagini recente » Cod sursa (job #1187657) | Cod sursa (job #860928) | Cod sursa (job #1977145) | Cod sursa (job #178636) | Cod sursa (job #1966528)
#include <iostream>
#include <fstream>
#define Nmax 250001
using namespace std;
ifstream f("stramosi.in");
ofstream g("stramosi.out");
int s[20][Nmax], n, m;
int stramos(int q, int p)
{
int k=q, nr=0;
while(p!=0)
{
if(k==0)
return 0;
if(p%2==1)
k=s[nr][k];
p/=2;
nr++;
}
return k;
}
int main()
{
f>>n>>m;
for(int i=1;i<=n;i++)
{
f>>s[0][i];
}
for(int i=1;i<=18;i++)
{
for(int j=1;j<=n;j++)
{
s[i][j]=s[i-1][s[i-1][j]];
}
}
for(int i=1;i<=m;i++)
{
int x,y;
f>>x>>y;
g<<stramos(x,y)<<'\n';
}
return 0;
}