Cod sursa(job #1927755)

Utilizator waren4Marius Radu waren4 Data 15 martie 2017 15:32:31
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.01 kb
#include <iostream>
#include <fstream>
using namespace std;

ifstream f("cautbin.in"); ofstream g("cautbin.out");
int n,i,a[100001],m,c,x;

int cautbin(int x) {
    int st=1,dr=n,mij,last=-1;
    while(st<=dr) {
        mij=(st+dr)/2;
        if(x==a[mij]) {
            if (c==0) {
                last=mij;
                st=mij+1;
            }
            if (c==1) {
                last=mij;
                st=mij+1;
            }
            if (c==2) {
                last=mij;
                dr=mij-1;
            }
         }
        if(x<a[mij]) {
            dr=mij-1;
            if (c==2) {
                last=mij;
            }
        }
        if(x>a[mij]) {
            st=mij+1;
            if (c==1) {
                last=mij;
            }
        }
    }
    return last;
}


int main() {
    f>>n;
    for(i=1;i<=n;++i) {
        f>>a[i];
    }
    f>>m;
    for(i=1;i<=m;++i) {
        f>>c>>x;
        g<<cautbin(x)<<'\n';
    }
    return 0;
}