Cod sursa(job #2169397)

Utilizator RaduNRadu Negovan RaduN Data 14 martie 2018 15:13:09
Problema Cautare binara Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 1.06 kb
#include <fstream>
using namespace std;
ifstream f("cautbin.in");
ofstream g("cautbin.out");
int v[100001], n, m;
int caut0(int x){
    int r=0, pas=1<<16;
    while (pas!=0){
        if (r+pas<=n && v[r+pas]<=x){
            r+=pas;
        }
        pas/=2;
    }
    if (v[r]!=x){
        return -1;
    }
    return r;
}
int caut1 (int x){
    int r=0, pas=1<<16;
    while (pas!=0){
        if (r+pas<=n && v[r+pas]<=x){
            r+=pas;
        }
        pas/=2;
    }
    return r;
}
int caut2 (int x){
    int r=0, pas=1<<16;
    while (pas!=0){
        if (r+pas<=n && v[r+pas]<x){
            r+=pas;
        }
        pas/=2;
    }
    r++;
    return r;
}
int main() {
    f>>n;
    for (int i=0; i<n; i++){
        f>>v[i];
    }
    f>>m;
    for (int i=0; i<m; i++){
        int c, x;
        f>>c>>x;
        if (c==0){
            g<<caut0(x)+1<<'\n';
        }
        if (c==1){
            g<<caut1(x)+1<<'\n';
        }
        if (c==2){
            g<<caut2(x)+1<<'\n';
        }
    }
    return 0;
}