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Cod sursa(job #441781)
#include<fstream>
#include<iostream>
#include<cstdio>
#define maxn 100002
using namespace std;
int n, m, v[maxn];
int cauta(int x)
{
int st=1, dr=n, mij, rez=st;
while(st<dr)
{
mij=(st+dr)/2;
if(v[mij]<=x)
rez=mij, st=mij+1;
else
dr=mij-1;
}
return rez;
}
int cauta2(int x)
{
int st=1, dr=n, mij, rez=st;
while(st<dr)
{
mij=(st+dr)/2;
if(v[mij]>=x)
rez=mij, dr=mij-1;
else
st=mij+1;
}
}
int main()
{
int i, op, x, rez;
ifstream fin("cautbin.in");
freopen("cautbin.out", "w", stdout);
fin>>n;
for(i=1;i<=n;++i)
fin>>v[i];
fin>>m;
for(i=1;i<=m;++i)
{
fin>>op>>x;
if(!op)
{
rez=cauta(x);
if(v[rez]==x)
printf("%d\n", rez);
else
printf("-1\n");
}
else if(op==1)
printf("%d\n", cauta(x));
else
printf("%d\n", cauta2(x));
}
return 0;
}