Cod sursa(job #1747567)

Utilizator Costel_DraghiciDraghici Constantin Costel_Draghici Data 25 august 2016 09:43:03
Problema Elementul majoritar Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.64 kb
#include <iostream>
#include <fstream>
#define Nmax 1000001

using namespace std;

ifstream f("elmaj.in");
ofstream g("elmaj.out");
int n,a[Nmax];

int mooreMajority(int n, int a[])
{
    int cand=-1,k=0;
    for(int i=1;i<=n;i++)
    if(k==0)
        cand=a[i],k=1;
    else
        if(a[i]==cand)
        k++;
        else
        k--;
    if(cand<0)
        return cand;
    int nr=0;
    for(int i=1;i<=n;i++)
        if(cand==a[i])
            nr++;
    if(nr>=n/2+1)
        g<<cand<<" "<<nr;
    else
        g<<-1;
}

int main()
{
    f>>n;
    for(int i=1;i<=n;i++)
        f>>a[i];
    mooreMajority(n,a);
}