Cod sursa(job #2088597)
Utilizator | Data | 15 decembrie 2017 16:11:31 | |
---|---|---|---|
Problema | Cautare binara | Scor | 40 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 1.28 kb |
#include <fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int n,i,p,u,cerinta,x,m,mid;
int v[100001],w[100001];
int main()
{
fin>>n;
for(i=1;i<=n;i++)
fin>>v[i];
fin>>m;
for(i=1;i<=m;i++){
fin>>cerinta;
fin>>x;
if(cerinta==0){
p=1;
u=n;
while(p<=u){
mid=(p+u)/2;
if(x>=v[mid])
p=mid+1;
else
u=mid-1;
}
if(v[u]==x)
w[i]=u;
else
w[i]=-1;
}
if(cerinta==1){
p=1;
u=n;
while(p<=u){
mid=(p+u)/2;
if(x>=v[mid])
p=mid+1;
else
u=mid-1;
}
w[i]=u;
}
if(cerinta==2){
p=1;
u=n;
while(p<=u){
mid=(p+u)/2;
if(x<=v[mid])
u=mid-1;
else
p=mid+1;
}
w[i]=p;
}
}
for(i=1;i<=m;i++){
fout<<w[i];
fout<<endl;
}
return 0;
}