Cod sursa(job #2075813)

Utilizator ioana_marinescuMarinescu Ioana ioana_marinescu Data 25 noiembrie 2017 18:02:11
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.91 kb
#include <bits/stdc++.h>
const int NMAX = 100005;
using namespace std;
ifstream fin("cautbin.in");
ofstream fout("cautbin.out");

int n, m, v[NMAX], ok, sol;

void bs(int val) {
    int p=1, i=0;
    while(p*2<=n)
        p=p<<1;
    while(p) {
        if(i+p<=n && v[i+p]<=val)
            i=i+p;
        p=p/2;
    }
    if(v[i]==val) {
        ok=1;
        sol=i;
    }
    else
        if(v[i]<val)
        sol=i;
}
int main() {
    int i, q, x;
    fin>>n;
    for(i=1; i<=n; i++)
        fin>>v[i];
    fin>>m;
    for(i=1; i<=m; i++) {
        fin>>q>>x;
        ok=0;
        bs(x);
        if(q==0) {
            if(ok==1)
                fout<<sol<<'\n';
        }
        if(q==1)
            fout<<sol<<'\n';
        if(q==2) {
            if(ok==1)
                fout<<sol<<'\n';
            else
                fout<<sol+1<<'\n';
        }
    }
    return 0;
}