Cod sursa(job #2420063)

Utilizator AndreiDeltaBalanici Andrei Daniel AndreiDelta Data 10 mai 2019 13:47:33
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.48 kb
#include <bits/stdc++.h>
#define Dim 100008
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int N,M,a,b,V[Dim],st,dr,mij;

int main()
{
    f>>N;
    for(int i=1;i<=N;i++) f>>V[i];
    f>>M;
    for(int i=1;i<=M;i++)
    {
        f>>a>>b;
        if(a==0)
        {
            st=1; dr=N;
            int ans=-1;
            while(st<=dr)
            {
                int mij=(st+dr)/2;
                if(V[mij]==b) ans=mij;
                if(V[mij]<=b) st=mij+1;
                else dr=mij-1;
            }
            g<<ans<<'\n';
        }
        else
        if(a==1)
        {
            st=1; dr=N;
            int ans=-1;
            while(st<=dr)
            {
                int mij=(st+dr)/2;
                if(V[mij]<=b)
                {
                    st=mij+1;
                    ans=mij;
                }
                else
                {
                    dr=mij-1;
                }
            }
            g<<ans<<'\n';
        }
        else
        if(a==2)
        {
            st=1; dr=N;
            int ans=-1;
            while(st<=dr)
            {
                int mij=(st+dr)/2;
                if(V[mij]<b)
                {
                    st=mij+1;
                }
                else
                {
                    ans=mij;
                    dr=mij-1;
                }
            }
            g<<ans<<'\n';
        }
    }

    return 0;
}