Cod sursa(job #2293671)

Utilizator ParutixLungeanu Razvan Parutix Data 1 decembrie 2018 14:06:00
Problema Elementul majoritar Scor 60
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.75 kb
#include <bits/stdc++.h>

using namespace std;

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

int main()
{
    int n,a[100001],i,j,nr=0,cnt=0,ap=0;;
    fin>>n;
    for(i=1;i<=n;i++)
    {
        fin>>a[i];
    }
    for(i=1;i<=n;i++)
    {
        if(cnt==0)
        {
            nr=a[i];
            cnt=1;
        }
        else
        {
            if(a[i]==nr)
            {
                cnt++;
            }
            else
            {
                cnt--;
            }
        }
    }
    for(i=1;i<=n;i++)
    {
        if(a[i]==nr)
        {
            ap++;
        }
    }
    if(ap>=n/2+1)
    {
        fout<<nr<<" "<<ap;
    }
    else
    {
        fout<<"-1";
    }
    return 0;
}