Cod sursa(job #2169428)

Utilizator RaduNRadu Negovan RaduN Data 14 martie 2018 15:26:37
Problema Cautare binara Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.07 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=1; 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)<<'\n';
        }
        if (c==1){
            g<<caut1(x)<<'\n';
        }
        if (c==2){
            g<<caut2(x)<<'\n';
        }
    }
    return 0;
}