Cod sursa(job #2869507)

Utilizator vladuandreeaVladu Andreea Teodora vladuandreea Data 11 martie 2022 16:22:06
Problema Elementul majoritar Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.76 kb
#include <fstream>

using namespace std;
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");

int v[1000005];
int n,cand=-1,k=0,i,nr=0;
void mooreMajority()
{
    for(i=0; i<n; i++)
    {
        if(k==0)
        {
            cand=v[i];
            k=1;
        }
        else if(v[i]==cand)
        {
            k++;
        }
        else
            k--;
    }
    if(cand<0)
        fout<<-1;
    else
    {

        for(i=0; i<n; i++)
        {
            if(v[i]==cand)
                nr++;
        }
        if(nr>n/2)
            fout<<cand<<" "<<nr;
        else
            fout<<-1;
    }
}

int main()
{
    fin>>n;
    for(i=0; i<n; i++)
    {
        fin>>v[i];
    }
    mooreMajority();
    return 0;
}