Cod sursa(job #3174712)

Utilizator EdyCristianStochita Eduard Cristian EdyCristian Data 25 noiembrie 2023 09:16:24
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.96 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");
int v[100002];
int main()
{
    int n, m, c, x, p, p1, p2, mij;
    fin >> n;
    for(int i=1;i<=n;i++) {
        fin >> v[i];
    }
    fin >> m;
    for(int i=1;i<=m;i++) {
        fin >> c >> x;
        if(c==0) {
            p1=1;
            p2=n;
            p=-1;
            while(p1<=p2) {
                mij=(p1+p2)/2;
                if(v[mij]==x) {
                    p=mij;
                    p1=mij+1;
                }
                else {
                    if(v[mij]<x) {
                        p1=mij+1;
                    }
                    else {
                        p2=mij-1;
                    }
                }
            }
            fout << p << '\n';
        }
        else if(c==1) {
            p1=1;
            p2=n;
            p=-1;
            while(p1<=p2) {
                mij=(p1+p2)/2;
                if(v[mij]==x) {
                    p=mij;
                    p1=mij+1;
                }
                else {
                    if(v[mij]<x) {
                        p=mij;
                        p1=mij+1;
                    }
                    else {
                        p2=mij-1;
                    }
                }
            }
            fout << p << '\n';
        }
        else {
            p1=1;
            p2=n;
            p=-1;
            while(p1<=p2) {
                mij=(p1+p2)/2;
                if(v[mij]==x) {
                    p=mij;
                    p2=mij-1;
                }
                else {
                    if(v[mij]<x) {
                        p1=mij+1;
                    }
                    else {
                        p=mij;
                        p2=mij-1;
                    }
                }
            }
            fout << p << '\n';
        }
    }
    return 0;
}