Cod sursa(job #1918428)

Utilizator Anamaria121421Balacescu Anamaria Anamaria121421 Data 9 martie 2017 15:24:07
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.29 kb
#include <fstream>

using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int n, i, t, x, v[100001], m, u, p;
int main()
{
    f >> n;
    for(i=1;i<=n;i++)
        f >> v[i];
    f >> m;
    for(i=1;i<=m;i++){
        f >> t >> x;
        p = 1; u = n;
        if(t==0){
            while (p <= u) {
                m = (p + u) / 2;
                if (v[m] <= x)
                    p = m + 1;
                else
                    u = m - 1;
            }
            m = (p + u) / 2;
            if (v[m] > x) m --;
            if (v[m] == x)
            g << m << '\n';
        }
        if(t==1){
            while (p < u){
                m = (p + u) / 2;
                if (v[m] <= x)
                    p = m + 1;
                else
                    u = m;
            }
            m = (p + u) / 2;
            if (v[m] > x)
               -- m;
            g << m << '\n';
        }
        if(t==2){
             while (p < u) {
                m = (p + u) / 2;
                if (v[m] < x)
                    p = m + 1;
                else
                    u = m;
            }
            m = (p + u) / 2;
            if (v[m] < x)
               ++ m;
            g << m << '\n';
        }
    }
    return 0;
}