Cod sursa(job #2070270)

Utilizator Bulboaca_EugenBulboaca Alexandru Eugen Bulboaca_Eugen Data 19 noiembrie 2017 13:19:13
Problema Elementul majoritar Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.86 kb
#include<fstream>
using namespace std;
int v[100001];
int cautb0(int p, int u, int key)
{
    int m=(p+u)/2;
    while(p+1 < u)
    {
            m=(p+u)/2;
            if(key<v[m])
                u=m-1;
            else p=m;
    }
    if (v[u] <= key)
    	return u;
    return p;
}
int main()
{
    ifstream fin("cautbin.in");
    ofstream fout("cautbin.out");
    int N, M;
    fin >> N;
    for(int i=1; i<=N; i++)
        fin >> v[i];
    fin >> M;
    for(int i=1; i<=M; ++i)
    {
        int type, x;
        fin >> type >> x;
        if(type==0)
            if(v[cautb0(0, N, x)]!=x)
                fout << "-1" << '\n';
            else fout << cautb0(0, N, x) << '\n';
        if(type==1)
            fout << cautb0(0, N, x) << '\n';
        if(type==2)
            fout << cautb0(0, N, x-1)+1 << '\n';
    }
    return 0;
}