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Cod sursa(job #333137)
#include<fstream>
using namespace std;
ifstream in("cautbin.in");
ofstream out("cautbin.out");
int n,m,v[100000],x;
int cautbin(int x)
{
int st=1,dr=n,mij;
do{
mij=st+(dr-st)/2;
if(v[mij]==x)
return mij;
if(v[mij]>x)
dr=mij-1;
if(v[mij]<x)
st=mij+1;
}
while(st<=dr);
return -1;
}
int cautbin1(int x)
{
int st=1,dr=n,mij;
do{
mij=st+(dr-st)/2;
if(v[mij]==x)
{
while(v[mij]==x)
mij++;
return mij-1;
}
if(v[mij]>x)
dr=mij-1;
if(v[mij]<x)
st=mij+1;
}
while(st<=dr);
return -1;
}
int cautbin2(int x)
{
while(cautbin1(x)==-1)
x--;
return cautbin1(x);
}
int cautbin3(int x)
{while(cautbin(x)==-1)
x++;
int mij=cautbin(x);
while(v[mij]==x)
mij--;
return mij+1;
}
int main()
{
int i,x,ef;
in>>n;
for(i=1;i<=n;i++)
in>>v[i];
in>>m;
for(i=1;i<=m;i++)
{
in>>ef>>x;
if(ef==0)
out<<cautbin1(x)<<"\n";
else if(ef==1)
out<<cautbin2(x)<<"\n";
else out<<cautbin3(x)<<"\n";
}
return 0;
in.close();
out.close();
}