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Cod sursa(job #202921)
#include<fstream.h>
#define MAX 100000
long n,m,a[MAX],x,poz;
int op;
ofstream fout("cautbin.out");
void ex_op(long p)
{
if(op==0 || op==2)
{
while(a[p]==x) p++;
if(op==0) fout<<p-1<<'\n';
else fout<<p<<'\n';
}
else
{
while(a[p]==x) p--;
fout<<p<<'\n';
}
}
void bin(long st, long dr)
{
long mij;
if(st<=dr)
{
mij=st+(dr-st)/2;
if(a[mij]==x)
ex_op(mij);
else
if(a[mij]>x)
bin(st,mij-1);
else
bin(mij+1,dr);
}
else
{
if(op==1)
fout<<dr<<'\n';
else if(op==2)
fout<<st<<'\n';
else fout<<"-1";
}
}
void citire()
{
ifstream fin("cautbin.in");
long i;
fin>>n;
for(i=1;i<=n;i++)
fin>>a[i];
fin>>m;
for(i=1;i<=m;i++)
{
fin>>op>>x;
poz=0;
bin(1,n);
}
}
int main()
{
citire();
fout.close();
return 0;
}