Cod sursa(job #2349127)
Utilizator | Data | 20 februarie 2019 10:39:56 | |
---|---|---|---|
Problema | Cautare binara | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 2.25 kb |
#include <iostream>
#include <fstream>
using namespace std;
int main()
{
long long int v[100005],n,m,i,caut,x,li,ls,mij,g,j;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
fin>>n;
for(i=1;i<=n;i++)
{
fin>>v[i];
}
fin>>m;
for(i=1;i<=m;i++)
{
fin>>caut;
fin>>x;
if(caut==0)
{
li=1;
ls=n;
while(li<=ls && !g)
{
mij=(li+ls)/2;
if(v[mij]==x)
{
g=1;
}
if(x > v[mij])
li=mij+1;
else
ls=mij-1;
}
if(g==1)
{
j=mij;
while(v[j]==v[mij] && j<=n)
j++;
fout<<j-1;
}
else
fout<<"-1";
}
if(caut==1)
{
li=1;
ls=n;
while(li<=ls && !g)
{
mij=(li+ls)/2;
if(v[mij]==x)
{
g=1;
}
if(x > v[mij])
li=mij+1;
else
ls=mij-1;
}
if(g==1)
{
j=mij;
while(v[j]==v[mij] && j<=n)
j++;
j--;
if(v[j-1]<v[j])
j++;
fout<<j;
}
}
if(caut==2)
{
li=1;
ls=n;
while(li<=ls && !g)
{
mij=(li+ls)/2;
if(v[mij]==x)
{
g=1;
}
if(x > v[mij])
li=mij+1;
else
ls=mij-1;
}
if(g==1)
{
j=mij;
while(v[j]==v[mij] && j<=n)
j--;
j++;
if(v[j+1]<v[j])
j++;
fout<<j;
};
}
}
fin.close();fout.close();
return 0;
}