text: #include <algorithm>
  #include <cassert>
  #include <cstdio>
  #include <cstdlib>
  #include <cstring>
  #include <iostream>
  #include <sstream>
  #include <string>
  #include <vector>
  #include <numeric>
  
  using namespace std;
  
  class SlimeXSlimeRancher2 {
  	public:
  	int train(vector <int> A) {
  		int t = *max_element(A.begin(), A.end());
          return (int)A.size()*t - accumulate(A.begin(), A.end(), 0);
  	}
  
  
  
  
  
  
  
     
  // BEGIN CUT HERE
  	public:
  	void run_test(int Case) { if ((Case == -1) || (Case == 0)) test_case_0(); if ((Case == -1) || (Case == 1)) test_case_1(); if ((Case == -1) || (Case == 2)) test_case_2(); }
  	private:
  	template <typename T> string print_array(const vector<T> &V) { ostringstream os; os << "{ "; for (typename vector<T>::const_iterator iter = V.begin(); iter != V.end(); ++iter) os << '\"' << *iter << "\","; os << " }"; return os.str(); }
  	void verify_case(int Case, const int &Expected, const int &Received) { cerr << "Test Case #" << Case << "..."; if (Expected == Received) cerr << "PASSED" << endl; else { cerr << "FAILED" << endl; cerr << "\tExpected: \"" << Expected << '\"' << endl; cerr << "\tReceived: \"" << Received << '\"' << endl; } }
  	void test_case_0() { int Arr0[] = {1,2,3}; vector <int> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 3; verify_case(0, Arg1, train(Arg0)); }
  	void test_case_1() { int Arr0[] = {5,5}; vector <int> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 0; verify_case(1, Arg1, train(Arg0)); }
  	void test_case_2() { int Arr0[] = {900,500,100}; vector <int> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 1200; verify_case(2, Arg1, train(Arg0)); }
  
  // END CUT HERE
   
  };
  
  // BEGIN CUT HERE 
  int main()
      {
      SlimeXSlimeRancher2 ___test; 
      ___test.run_test(-1); 
      } 
  // END CUT HERE
  