increase-and-decrease.cpp

#include<bits/stdc++.h>
using namespace std;

int main(){
     int n;
     cin>>n;
     int arr[n];

     for(int i=0; i<n; i++) cin>>arr[i];

     sort(arr, arr+n);
    int sum = 0;
     for(int i =0; i<n; i++) sum+= arr[i];

     if(sum % n==0) cout<<n<<endl;
     else cout<<n-1<<endl;
    return 0;
}