Cod sursa(job #3228607)

Utilizator popescu_georgePopescu George popescu_george Data 9 mai 2024 08:17:49
Problema Cautare binara Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.55 kb
#include<fstream>
using namespace std;
ifstream F("cautbin.in");
ofstream G("cautbin.out");
int a[100000],n,i,j,k,l,t,m;
int main()
{
    for(F>>n;i<n;F>>a[i++]);
    for(F>>m,k=1;k<n;k<<=1);
    for(;m--;)
        if(F>>l>>j,l<2) {
            for(i=0,t=k;t;t>>=1)
                if(i+t<n&&a[i+t]<=j)
                    i+=t;
            G<<(!l&&a[i]!=j?-1:i+1)<<'\n';
        } else {
            for(i=n-1,t=k;t;t>>=1)
                if(i>=t&&a[i-t]>=j)
                    i-=t;
            G<<i+1<<'\n';
        }
    return 0;
}