Cod sursa(job #3262100)

Utilizator bulbariu_ericEric Bulbariu bulbariu_eric Data 8 decembrie 2024 18:40:50
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.04 kb
#include <fstream>

using namespace std;
ifstream cin("cautbin.in");
ofstream cout("cautbin.out");
int v[100005];
int cautarebinaradr(int n,int x){
    int mij;
    int st=1,dr=n;
    while(st<dr){
    mij=(st+dr)/2;
    if(x>=v[mij+1]){
        st=mij+1;
    }
    else{
        dr=mij;
    }
}
return dr;
}
int cautarebinarast (int n,int y){
    int mij;
    int st=1,dr=n;
    while(st<dr){
        mij=(st+dr)/2;
        if(y<=v[mij]){
            dr=mij;
        }
        else{
                st=mij+1;
        }
    }
    return st;
}
int main()
{
  int n,x;
  cin>>n;
  for(int i=1;i<=n;++i){
    cin>>v[i];
  }
  int m,type,q;
   cin>>m;
   for(int i=1;i<=m;++i){
    cin>>type>>q;
    if(type==0){
        if(v[cautarebinaradr(n,q)]==q){
            cout<<cautarebinaradr(n,q)<<'\n';
        }
        else {
            cout<<"-1"<<'\n';
        }
    }
    if(type==1){
        cout<<cautarebinaradr(n,q)<<'\n';
    }
    if(type==2){
        cout<<cautarebinarast(n,q)<<'\n';
    }
   }
}