Cod sursa(job #3208882)

Utilizator DomnulMilandruMilandru Nicon-David DomnulMilandru Data 1 martie 2024 12:24:25
Problema Elementul majoritar Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.56 kb

#include <fstream>
#include <unordered_map>
using namespace std;
ifstream cin("elmaj.in");
ofstream cout("elmaj.out");
int n,x;
int maj,cnt;
unordered_map<int,int> M;
int main()
{
    cin>>n;
    cin>>maj;
    M[maj]++;
    cnt=1;
    for(int i=1;i<n;i++)
    {
        cin>>x;
        M[x]++;
        if(maj==x)
           cnt++;
        else
          cnt--;
        if(cnt<0)
        {
            maj=x;
            cnt=1;
        }
    }
    if(M[maj]>n/2)
        cout<<maj<<" "<<M[maj];
    else
       cout<<-1;
    return 0;
}