Pagini recente » Istoria paginii runda/asul_din_maneca/clasament | Istoria paginii utilizator/lacreshaee2196 | Cod sursa (job #114889) | Profil LeviPetrea | Cod sursa (job #2078158)
#include <fstream>
#define nmax 100002
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
unsigned int v[nmax],n,m;
unsigned int caut_bin0(unsigned int st,unsigned int dr, unsigned int x)
{
if(st>=dr) return -1;
if(st<dr)
{
unsigned int mij=st+(dr-st)/2;
if(v[mij]<x || (v[mij]==x && v[mij+1]==x))
return caut_bin0(mij+1,dr,x);
if(v[mij]>x)
return caut_bin0(st,mij-1,x);
if(v[mij]==x && v[mij+1]>x)
return mij;
}
}
unsigned int caut_bin1(unsigned int st,unsigned int dr, unsigned int x)
{
if(st<=dr)
{
unsigned int mij=st+(dr-st)/2;
if(v[mij]>x)
return caut_bin1(st, mij-1,x);
if(v[mij]<=x && v[mij+1]<=x)
return caut_bin1(mij+1,dr,x);
if(v[mij]<=x && v[mij+1]>x)
return mij;
}
}
unsigned int caut_bin2(unsigned int st,unsigned int dr,unsigned int x)
{
if(st<=dr)
{
unsigned int mij=st+(dr-st)/2;
if(v[mij]<x)
return caut_bin2(mij+1,dr,x);
if(v[mij]>=x && v[mij-1]>=x)
return caut_bin2(st,mij-1,x);
if(v[mij]>=x && v[mij-1]<x)
return mij;
}
}
int main()
{
f>>n;
for(unsigned int i=1;i<=n;++i)
f>>v[i];
f>>m;
for(unsigned int i=1;i<=m;++i)
{
unsigned int tip_cautare,x;
f>>tip_cautare>>x;
if(tip_cautare==0)
g<<caut_bin0(1,n,x)<<'\n';
else if(tip_cautare==1)
g<<caut_bin1(1,n,x)<<'\n';
else g<<caut_bin2(1,n,x)<<'\n';
}
return 0;
}