Pagini recente » Cod sursa (job #1018322) | Cod sursa (job #1603905) | Cod sursa (job #718451) | Cod sursa (job #2253822) | Cod sursa (job #198427)
Cod sursa(job #198427)
#include <stdio.h>
#define MAXN 250001
#define MAXL 18
using namespace std;
long n,m,i,j,p,q,t;
long os[MAXN][MAXL+1];
long log[MAXN];
int main()
{
freopen("stramosi.in","r",stdin);
freopen("stramosi.out","w",stdout);
scanf("%ld %ld\n",&n,&m);
for (i=1; i<=n; ++i) scanf("%ld",&os[i][0]);
scanf("\n");
log[1]=0;
for (i=2; i<=n; ++i) log[i]=log[i/2]+1;
for (i=1; i<=MAXL; ++i)
for (j=1;j<=n;++j)
os[j][i]=os[os[j][i-1]][i-1];
for (i=1; i<=m; ++i)
{
scanf("%ld %ld\n",&q,&p);
while (p && q)
{
q=os[q][log[p]];
p-=1<<log[p];
}
printf("%ld\n",q);
}
return 0;
}