Cod sursa(job #3167109)
Utilizator | Data | 9 noiembrie 2023 23:44:19 | |
---|---|---|---|
Problema | Cautare binara | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 3.26 kb |
#include <iostream>
#include <algorithm>
#include <fstream>
using namespace std;
int n,i,m,t,x,verif,mid,st,dr,v[10000];
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int main()
{
fin>>n;
for(i=1;i<=n;i++)
{
fin>>v[n];
}
sort(v,v+n+1);
fin>>m;
for(i=1;i<=m;i++)
{
fin>>t>>x;
if(t==0)
{
verif=0;
st=0;
dr=n;
while(verif==0)
{
mid=(st+dr)/2;
if(v[mid]==x)
{
while(v[mid+1]==x)
{
mid++;
}
fout<<mid<<endl;
verif=1;
}
else if(v[mid]>x)
{
dr=mid;
}
else if(v[mid]<x)
{
st=mid;
}
if(st>dr)
{
verif=1;
fout<<"-1"<<endl;
}
}
}
if(t==1)
{
verif=0;
st=0;
dr=n;
while(verif==0)
{
mid=(st+dr)/2;
if(v[mid]==x)
{
while(v[mid+1]==x)
{
mid++;
}
fout<<mid<<endl;
verif=1;
}
else if(v[mid]>x)
{
dr=mid-1;
}
else if(v[mid]<x)
{
st=mid+1;
}
if(st>dr)
{
if(v[mid]<x)
{
fout<<mid<<endl;
}
else{
while(v[mid]>x)
{
mid--;
}
fout<<mid<<endl;
}
verif=1;
}
}
}
if(t==2)
{
verif=0;
st=0;
dr=n;
while(verif==0)
{
mid=(st+dr)/2;
if(v[mid]==x)
{
while(v[mid-1]==x)
{
mid--;
}
fout<<mid<<endl;
verif=1;
}
else if(v[mid]>x)
{
dr=mid;
}
else if(v[mid]<x)
{
st=mid;
}
if(st>dr)
{
if(v[mid]>x)
{
fout<<mid<<endl;
}
else
{
while(v[mid+1]<x)
{
mid++;
}
fout<<mid<<endl;
}
}
}
}
}
return 0;
}