Cod sursa(job #1264160)

Utilizator lucaignatescuIgnatescu Luca lucaignatescu Data 15 noiembrie 2014 16:13:44
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.59 kb
#include <cstdio>

using namespace std;

int main()
{
    freopen("cautbin.in","r",stdin);
    freopen("cautbin.out","w",stdout);
    int n,v[100005],st,dr,mij,i,x,m,op,sol;
    scanf("%d",&n);
    for(i=1; i<=n; ++i)
        scanf("%d",&v[i]);
    scanf("%d",&m);
    for(i=1; i<=m; ++i)
    {
        scanf("%d%d",&op,&x);
        if(op==0)
        {
            st=1;
            dr=n;
            sol=-1;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(x<v[mij])
                    dr=mij-1;
                if(x>v[mij])
                    st=mij+1;
                if(x==v[mij])
                {
                    sol=mij;
                    st=mij+1;
                }
            }
            printf("%d\n",sol);
        }
        if(op==1)
        {
            sol=-1;
            st=1;
            dr=n;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]<=x)
                {
                    sol=mij;
                    st=mij+1;
                }
                else
                    dr=mij-1;

            }
            printf("%d\n",sol);
        }
        if(op==2)
        {
            st=1;
            dr=n;
            while(st<=dr)
            {
                mij=(st+dr)/2;
                if(v[mij]>=x)
                {
                    sol=mij;
                    dr=mij-1;
                }
                else
                    st=mij+1;

            }
            printf("%d\n",sol);
        }
    }
    return 0;
}