Cod sursa(job #1871412)

Utilizator TibiraducanuTiberiu Raducanu Tibiraducanu Data 7 februarie 2017 12:51:28
Problema Cautare binara Scor 40
Compilator cpp Status done
Runda Arhiva educationala Marime 1.03 kb
#include <cstdio>

using namespace std;

const int N=100005;
int v[N];

int main()
{
    freopen("cautbin.in","r",stdin);
    freopen("cautbin.out","w",stdout);

    int n,q,i,j,In,Sf,Mij,T,x;

    scanf("%d",&n);
    for(i=1;i<=n;i++) scanf("%d",&v[i]);

    scanf("%d",&q);
    while(q--){
        scanf("%d%d",&T,&x);
        In=1, Sf=n;

        if(T!=2){
            while(In<Sf){
                Mij=(In+Sf)/2;
                if(v[Mij]<=x) In=Mij+1;
                else Sf=Mij;
            }

            if(In==n and v[n]==x){
                printf("%d\n",n);
                continue;
            }
            if(T==0){
                if(v[In-1]==x) printf("%d\n",In-1);
                else printf("-1\n");
            }
            else printf("%d\n",In-1);
        }
        else{
            while(In<Sf){
                Mij=(In+Sf)/2+1;
                if(v[Mij]<x) In=Mij;
                else Sf=Mij-1;
            }
            printf("%d\n",In+1);
        }
    }

    return 0;
}