Cod sursa(job #3176757)
Utilizator | Data | 27 noiembrie 2023 18:40:18 | |
---|---|---|---|
Problema | Cautare binara | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 1.85 kb |
#include <fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int n,m,v[100001],nrintrb,nr,st,dr,mij,poz,maxx,i,x;
int main()
{
fin>>n;
for(i=1;i<=n;i++)
{
fin>>v[i];
}
fin>>m;
for(i=1;i<=m;i++)
{
fin>>nrintrb>>x;
if(nrintrb==0)
{
poz=-1;
st=1;
dr=n;
while(st<=dr && poz==-1)
{
mij=(st+dr)/2;
if(v[mij]==x)
{
poz=mij;
st=mij+1;
}
else
{
if(v[mij]<x)
{
st=mij+1;
}
else
{
dr=mij-1;
}
}
}
fout<<poz<<endl;
}
if(nrintrb==1)
{
st=1;
dr=n;
poz=-1;
maxx=0;
while(st<=dr)
{
mij=(st+dr)/2;
if(v[mij]<=x)
{
poz=mij;
st=mij+1;
}
else
{
dr=mij-1;
}
}
fout<<poz<<endl;
}
if(nrintrb==2)
{
st=1;
dr=n;
poz=-1;
while(st<=dr)
{
mij=(st+dr)/2;
if(v[mij]>=x)
{
poz=mij;
dr=mij-1;
}
else
{
st=mij+1;
}
}
fout<<poz<<endl;
}
}
return 0;
}