Cod sursa(job #864153)
| Utilizator | Data | 24 ianuarie 2013 18:23:07 | |
|---|---|---|---|
| Problema | Stramosi | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.47 kb |
#include <fstream>
using namespace std;
ifstream f("stramosi.in");
ofstream g("stramosi.out");
int t[18][250001],logi[250001];
int main()
{
int n,m,i,j,x,y;
f>>n>>m;
for(i=1;i<=n;i++)
{
f>>t[0][i];
}
for(i=1; (1<<i)<=n; i++)
for(j=1;j<=n;j++)
t[i][j]=t[i-1][t[i-1][j]];
logi[1]=0;
for(i=2;i<=n;i++)
logi[i]=logi[i/2]+1;
for(i=1;i<=m;i++)
{
f>>x>>y;
while(y)
{
x=t[logi[y]][x];
y=y-(1<<logi[y]);
}
g<<x<<'\n';
}
}
