Cod sursa(job #874566)
Utilizator | Andrei Constantinescu Andrei1998 | Data | 8 februarie 2013 20:16:50 |
---|---|---|---|
Problema | Cautare binara | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 2.18 kb |
#include <fstream>
using namespace std;
int main()
{
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
unsigned long long int n;
fin>>n;
unsigned long long int v[100001];
unsigned long long int i;
for(i=0;i<n;i++)
{
fin>>v[i];
}
unsigned long long int m;
fin>>m;
unsigned long long int tip,numar;
unsigned long long int cap=0;
unsigned long long int coada=n-1;
unsigned long long int mijl;
long long int raspuns;
for(i=0;i<m;i++)
{
fin>>tip;
fin>>numar;
if(tip==0)
{
cap=0;
coada=n-1;
mijl=(n-1)/2;
raspuns=-1;
while(cap<=coada)
{
if(v[mijl]==numar)
{
raspuns=mijl;
cap=mijl+1;
}
else if(v[mijl]<numar)
{
cap=mijl+1;
}
else
{
coada=mijl-1;
}
mijl=(cap+coada)/2;
}
fout<<raspuns+1<<'\n';
}
else if(tip==1)
{
cap=0;
coada=n-1;
mijl=(n-1)/2;
raspuns=-1;
while(cap<=coada)
{
if(v[mijl]<=numar)
{
raspuns=mijl;
cap=mijl+1;
}
else
{
coada=mijl-1;
}
mijl=(cap+coada)/2;
}
fout<<raspuns+1<<'\n';
}
else
{
cap=0;
coada=n-1;
mijl=(n-1)/2;
raspuns=-1;
while(cap<=coada)
{
if(v[mijl]>=numar)
{
raspuns=mijl;
coada=mijl-1;
}
else
{
cap=mijl+1;
}
mijl=(cap+coada)/2;
}
fout<<raspuns+1<<'\n';
}
}
fin.close();
fout.close();
return 0;
}