Cod sursa(job #2183620)

Utilizator BlkAlexAlex Negru BlkAlex Data 23 martie 2018 12:00:57
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.81 kb
#include <bits/stdc++.h>
#define nrmare 100100

using namespace std;

ifstream f("cautbin.in");
ofstream g("cautbin.out");

int n, m, p, k, v[nrmare];

void dostuff(){
    f>>n;
    for (int i=1; i<=n; i++){
        f>>v[i];
    }
    f>>m;
    sort(v+1, v+n+1);
}

void cautbin (int p, int k){
    int poz;
    if (p==0){
        poz=upper_bound(v+1, v+n+1, k)-v-1;
        if (poz>=1 && poz<=n && v[poz]==k){
            g<<poz<<"\n";
        } else {
            g<<"-1\n";
        }
        return;
    }
    if (p==1){
        poz=lower_bound(v+1, v+n+1, k+1)-v-1;
    }
    if (p==2){
        poz=upper_bound(v+1, v+n+1, k-1)-v;
    }
    g<<poz<<"\n";
}

int main()
{
    dostuff();
    for (int i=1; i<=m; i++){
        f>>p>>k;
        cautbin(p, k);
    }
    return 0;
}