Pagini recente » Cod sursa (job #2475779) | Cod sursa (job #1222805) | Cod sursa (job #914506) | Cod sursa (job #492954) | Cod sursa (job #1391997)
#include <stdio.h>
int n,m;
int dp[250001][19];
int p2[31];
int main()
{
freopen ("stramosi.in","r",stdin);
freopen ("stramosi.out","w",stdout);
int n,m;
scanf("%d%d",&n,&m);
for(int i=1;i<=n;i++)
{
scanf("%d",&dp[i][0]);
}
for(int i=1;i<=n;i++)
{
for(int j=1;j<=18;j++)
{
dp[i][j]=dp[dp[i][j-1]][j-1];
}
}
p2[0]=1;
for(int i=1;i<=19;i++) p2[i]=(1<<i);
int x,y;
for(int i=1;i<=m;i++)
{
scanf("%d%d",&x,&y);
for(int j=19;j>=0;j--)
{
if(y>=p2[j])
{
x=dp[x][j];
y-=p2[j];
}
}
//printf("\n");
printf("%d\n",x);
}
}