Codeforces-solution 758A:Holiday of equality #include

using namespace std;

int main()

{ int n,arr[100],i,j=0,k=0; cin>>n; for(i=0;i<n;i++) { cin>>arr[i]; j=max(arr[i],j); } for(int i=0;i<n;i++) { k=k+j-arr[i]; }

cout <<k<< endl;
return 0;

}