Cod sursa(job #2850960)

Utilizator MogoneaMIhneaMogonea Mihnea Mihai MogoneaMIhnea Data 17 februarie 2022 20:34:52
Problema Cautare binara Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.26 kb
#include<fstream>
using namespace std;
ifstream fin ("cautbin.in");
ofstream fout ("cautbin.out");
int v[100001], n, mij, st, dr, i, x, nr, m;
int main(){
    fin>>n;
    for(i=1;i<=n;i++)
        fin>>v[i];
    fin>>m;
    for(i=1;i<=m;i++){
        fin>>nr>>x;
        st=1;
        dr=n;
        if(nr==0){
            while(st<=dr){
                mij=(st+dr)/2;
                if(v[mij]>x)
                    dr=mij-1;
                else
                    st=mij+1;
            }
            if (v[dr]==x){
                fout<<dr;
            fout<<"\n";
            }else{
                fout<<-1;
            fout<<"\n";
            }
        }
        if(nr==1){
            while(st<=dr){
                mij=(st+dr)/2;
                if(v[st]<=x)
                    st=mij+1;
                else
                    dr=mij-1;

            }
            fout<<dr;
        fout<<"\n";
        }
        if(nr==2){
            while(st<=dr){
                mij=(st+dr)/2;
                if(v[mij]>=x)
                    dr=mij-1;
                else
                    st=mij+1;

            }
            fout<<st;
        fout<<"\n";
        }

    }
///5
///1 3 3 3 5
///3
///0 3
///1 3
///2 3
    }