#include<bits/stdc++.h> #define ll long long using namespace std; ll n,ans,a[110],num; int main(){ cin>>n; for(ll i=1;i<=n;i++){ cin>>a[i]; num+=a[i]; } num/=n; for(ll i=1;i<n;i++){ if(a[i]==num) continue; a[i+1]+=(a[i]-num); a[i]=num; ans++; } cout<<ans<<endl; return 0; }