Cod sursa(job #523533)
Utilizator | andru Vasile mgtest | Data | 18 ianuarie 2011 15:15:45 |
---|---|---|---|
Problema | Stramosi | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.51 kb |
#include<fstream>
using namespace std;
ifstream f("stramosi.in");
ofstream g("stramosi.out");
int n,m,v[20][250001],i,j,niv,w=1,x,y;
int main(){
f>>n>>m;
for(i=1;i<=n;++i) f>>v[0][i];
for(niv=1;w;niv++){
w=0;
for(i=1;i<=n;i++){
v[niv][i]=v[niv-1][v[niv-1][i]];
if(v[niv][i]) w=1;
}
}
for(i=1;i<=m;i++)
{
f>>x>>y;
while(x&&y){
niv=1;
for(;1<<(niv)<=y && niv<=18;niv++);
niv--;
x=v[niv][x];
y-=(1<<niv);
}
g<<x<<'\n';
}
g.close();
return 0;
}