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Cod sursa(job #786550)
#include <fstream>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
long n,m,i,st,dr,mij,x,t,nr;
long v[100000];
int main()
{
f>>n;
for (i=1;i<=n;i++)
f>>v[i];
f>>m;
for (i=1;i<=m;i++)
{
f>>t>>x;
if (t==0)
{
st=1;
mij=n/2;
dr=n;
while (st<mij)
{
if (v[mij]<=x)
{
st=mij;
mij=(dr+st)/2;
}
else
{
dr=mij;
mij=(dr+st)/2;
}
}
if (v[mij]==x)
g<<mij<<'\n';
else
g<<"-1"<<'\n';
}
if (t==1)
{
st=1;
mij=n/2;
dr=n;
while (st<mij)
{
if (v[mij]<=x)
{
st=mij;
mij=(st+dr)/2;
}
else
{
dr=mij;
mij=(dr+st)/2;
}
}
g<<mij<<'\n';
}
if (t==2)
{
st=1;
mij=n/2;
dr=n;
while (dr>mij)
{
if (v[mij]>=x)
{
dr=mij;
mij=(dr+st+1)/2;
}
else
{
st=mij;
mij=(dr+st+1)/2;
}
}
g<<mij<<'\n';
}
}
f.close();
g.close();
return 0;
}