#include<iostream>
#include<vector>

using namespace std;

int main( void )
{
    long long N;
    cin >> N;
    vector<long long> A( N );
    long long sum = 0;
    long long min_num = 1e9 + 1;
    for( int i = 0; i < N; i++ )
    {
        cin >> A[i];
        sum += A[i];
        min_num = min( min_num, A[i] );
    }
    if( sum % N != 0 )
    {
        cout << "No" << endl;
    }
    else
    {
        for( int i = 0; i < N; i++ )
        {
            if( ( A[i] - min_num ) % N != 0 )
            {
                cout << "No" << endl;
                return 0;
            }
        }
        cout << "Yes" << endl;
    }

    return 0;
}