Cod sursa(job #2566196)
| Utilizator | Data | 2 martie 2020 19:26:36 | |
|---|---|---|---|
| Problema | Stramosi | Scor | 100 |
| Compilator | cpp-64 | Status | done |
| Runda | Arhiva de probleme | Marime | 0.69 kb |
#include <fstream>
using namespace std;
int t[250005];
int stra[19][250005];
int up(int x, int p)
{
for (int i=18;i>=0;i--)
if (1<<i<=p)
{
p-=1<<i;
x=stra[i][x];
}
return x;
}
int main()
{
ifstream fin ("stramosi.in");
ofstream fout ("stramosi.out");
int n,m,x,p;
fin>>n>>m;
for (int i=1;i<=n;i++)
{
fin>>t[i];
stra[0][i]=t[i];
}
for (int i=1;i<=18;i++)
for (int j=1;j<=n;j++)
stra[i][j]=stra[i-1][stra[i-1][j]];
for (int i=1;i<=m;i++)
{
fin>>x>>p;
fout<<up(x,p)<<'\n';
}
return 0;
}
