Cod sursa(job #3331780)
| Utilizator | Data | 30 decembrie 2025 22:33:02 | |
|---|---|---|---|
| Problema | Cautare binara | Scor | 100 |
| Compilator | cpp-64 | Status | done |
| Runda | Arhiva educationala | Marime | 1.77 kb |
#include <bits/stdc++.h>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int n;
int v[100005];
int cerinta,x;
int m;
int main()
{
fin>>n;
for(int i=1;i<=n;i++)
{
fin>>v[i];
}
fin>>m;
for(int i=1;i<=m;i++)
{
int maxim=-1;
fin>>cerinta>>x;
if(cerinta==0)
{
int st=1,dr=n;
bool ok=false;
while(st<=dr)
{
int mij=(st+dr)/2;
if(v[mij]==x){
ok=true;
maxim=mij;
st=mij+1;
}
else if(v[mij]<x)
st=mij+1;
else
{
dr=mij-1;
}
}
if(ok)
fout<<maxim<<endl;
else
fout<<-1<<endl;
}
maxim=-1;
if(cerinta==1)
{
int st=1,dr=n;
while(st<=dr)
{
int mij=(st+dr)/2;
if(v[mij]<=x)
{
maxim=mij;
st=mij+1;
}
else
dr=mij-1;
}
fout<<maxim<<endl;
}
int minim=INT_MAX;
if(cerinta==2)
{
int st=1;
int dr=n;
int i=1;
while(st<=dr)
{
int mij=(st+dr)/2;
if(v[mij]>=x)
{
minim=mij;
dr=mij-1;
}
else
st=mij+1;
}
fout<<minim<<endl;
}
}
}
