Cod sursa(job #1104495)
Utilizator | Cobuz Andrei classius | Data | 10 februarie 2014 20:24:35 |
---|---|---|---|
Problema | Stramosi | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.67 kb |
using namespace std;
#include<cstdio>
const int MAXN=250100;
int a[MAXN][18];
int main(){
freopen("stramosi.in","r",stdin);
freopen("stramosi.out","w",stdout);
int n,m,lg,x,ds;
scanf("%d%d",&n,&m);
lg=log2(n);
for(int i=1;i<=n;i++){
scanf("%d",&a[i][0]);
}
for(int j=1;j<=lg;j++){
for(int i=1;i<=n;i++){
a[i][j]=a[a[i][j-1]][j-1];
}
}
for(int i=1;i<=m;i++){
scanf("%d%d",&x,&ds);
for(int j=0;j<=lg && x;j++){
if(ds & 1){
x=a[x][j];
}
ds>>=1;
}
printf("%d\n",x);
}
return 0;
}