Cod sursa(job #2713531)

Utilizator Paul480Paul Ionescu Paul480 Data 28 februarie 2021 10:57:25
Problema Cautare binara Scor 40
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.39 kb
#include <fstream>

using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int v[100001];
int main()
{
    int x,st,dr,n,mij,i,sol,m,t;
    fin>>n;
    for(i=1;i<=n;i++)
        fin>>v[i];
    fin>>m;
    for(i=1;i<=m;i++){
        fin>>t>>x;
        if(t==0){
            st=1;
            dr=n;
            sol=-1;
            while(st<=dr){
                mij=(st+dr)/2;
                if(v[mij]>x)
                    dr=mij-1;
                else{
                    if(v[mij]==x)
                        sol=mij;
                    st=mij+1;
                }
            }
            fout<<sol<<endl;
        }
        if(t==1){
            sol=-1;
            st=1;
            dr=n;
            while(st<=dr){
                mij=(st+dr)/2;
                if(v[mij]<=x){
                    sol=mij;
                    st=mij+1;
                }
                else
                    dr=mij-1;
            }
            fout<<sol<<endl;
        }
        if(t==2){
            sol=-1;
            st=1;
            dr=n;
            while(st<=dr){
                mij=(st+dr)/2;
                if(v[mij]>=x){
                    sol=mij;
                    dr=mij-1;
                }
                else
                    st=mij+1;
            }
            fout<<sol<<endl;
        }
    }
    return 0;
}