Cod sursa(job #355763)
Utilizator | andrei ion andreii_93 | Data | 12 octombrie 2009 08:39:52 |
---|---|---|---|
Problema | Stramosi | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.49 kb |
#include<cstdio>
int a[20][250001],n;
int stram(int x, int nr)
{
int i=0;
while(nr)
{
if(nr&1) x=a[i][x];
++i;
nr>>=1;
}
return x;
}
int main()
{
int i,j,m,x,y;
freopen("stramosi.in","r",stdin);
freopen("stramosi.out","w",stdout);
scanf("%d%d",&n,&m);
for(i=1;i<=n;++i)
scanf("%d",&a[0][i]);
for(i=1;1<<i<=n;++i)
for(j=1;j<=n;++j)
a[i][j]=a[i-1][a[i-1][j]];
for(i=1;i<=m;++i)
{
scanf("%d%d",&x,&y);
printf("%d\n",stram(x,y));
}
return 0;
}