#include <iostream>
#include <vector>
#include <cstdio>
#include <sstream>
#include <map>
#include <string>
#include <algorithm>
#include <queue>
#include <cmath>
#include <functional>
#include <set>
#include <ctime>
#include <random>
#include <chrono>
#include <cassert>
using namespace std;

namespace {
  using Integer = long long; //__int128;
  template<class T> istream& operator >> (istream& is, vector<T>& vec){for(T& val: vec) is >> val; return is;}
  template<class T> istream& operator ,  (istream& is, T& val){ return is >> val;}
  template<class T> ostream& operator << (ostream& os, const vector<T>& vec){for(int i=0; i<vec.size(); i++) os << vec[i] << (i==vec.size()-1?"":" "); return os;}
  template<class T> ostream& operator ,  (ostream& os, const T& val){ return os << " " << val;}

  template<class H> void print(const H& head){ cout << head; }
  template<class H, class ... T> void print(const H& head, const T& ... tail){ cout << head << " "; print(tail...); }
  template<class ... T> void println(const T& ... values){ print(values...); cout << endl; }

  template<class H> void eprint(const H& head){ cerr << head; }
  template<class H, class ... T> void eprint(const H& head, const T& ... tail){ cerr << head << " "; eprint(tail...); }
  template<class ... T> void eprintln(const T& ... values){ eprint(values...); cerr << endl; }

  class range{
    long long start_, end_, step_;
   public:
    struct range_iterator{
      long long val, step_;
      range_iterator(long long v, long long step) : val(v), step_(step) {}
      long long operator * (){return val;}
      void operator ++ (){val += step_;}
      bool operator != (range_iterator& x){return step_ > 0 ? val < x.val : val > x.val;}
    };
    range(long long len) : start_(0), end_(len), step_(1) {}
    range(long long start, long long end) : start_(start), end_(end), step_(1) {}
    range(long long start, long long end, long long step) : start_(start), end_(end), step_(step) {}
    range_iterator begin(){ return range_iterator(start_, step_); }
    range_iterator   end(){ return range_iterator(  end_, step_); }
  };

  string operator "" _s (const char* str, size_t size){ return move(string(str)); }
  constexpr Integer my_pow(Integer x, Integer k, Integer z=1){return k==0 ? z : k==1 ? z*x : (k&1) ? my_pow(x*x,k>>1,z*x) : my_pow(x*x,k>>1,z);}
  constexpr Integer my_pow_mod(Integer x, Integer k, Integer M, Integer z=1){return k==0 ? z%M : k==1 ? z*x%M : (k&1) ? my_pow_mod(x*x%M,k>>1,M,z*x%M) : my_pow_mod(x*x%M,k>>1,M,z);}
  constexpr unsigned long long operator "" _ten (unsigned long long value){ return my_pow(10,value); }

  inline int k_bit(Integer x, int k){return (x>>k)&1;} //0-indexed

  mt19937 mt(chrono::duration_cast<chrono::nanoseconds>(chrono::steady_clock::now().time_since_epoch()).count());

  template<class T> string join(const vector<T>& v, const string& sep){
    stringstream ss; for(int i=0; i<v.size(); i++){ if(i>0) ss << sep; ss << v[i]; } return ss.str();
  }

  string operator * (string s, int k){ if(k<=0) return ""; string ret; while(k){ if(k&1) ret += s; s += s; k >>= 1; } return ret; }

}

constexpr long long mod = 9_ten + 7;

long long gcd(long long a, long long b){ return (b==0)?a:gcd(b,a%b); }
template<class ... T> long long gcd(long long a, long long b, T ... c){ return gcd(gcd(a,b), c...);}
long long lcm(long long a, long long b){ if(a<b) swap(a,b); return (b==1)?a:a*(b/gcd(a,b)); }
template<class ... T> long long lcm(long long a, long long b, T ... c){ return lcm(lcm(a,b), c...);}

long long extgcd(long long a, long long b, long long &x, long long &y){
  long long d=a;
  if(b!=0){
    d = extgcd(b, a%b, y, x);
    y -= (a/b) * x;
  }else{
    x = 1;
    y = 0;
  }
  return d;
}

#include <tuple>
tuple<int,int,int> check(long long a, long long b, long long& x, long long& y, long long k){
  tuple<int,int,int> len = tuple<int,int,int> {10000000,-1,-1};

  for(x=-10000; x<=10000; x++){
    long long rem = k - a*x;
    if(rem % b != 0) continue;
    y = rem / b;
    if(x == 0 && y== 0) continue;
    //if( (abs(x) + abs(y)) * 2 - 1 > 10000) continue;

    len = min(len, tuple<int,int,int>{ (abs(x) + abs(y)) * 2 - 1, x, y });
  }

  for(y=-10000; y<=10000; y++){
    long long rem = k - b*y;
    if(rem % a != 0) continue;
    x = rem / a;
    if(x == 0 && y== 0) continue;
    //if( (abs(x) + abs(y)) * 2 - 1 > 10000) continue;

    len = min(len, tuple<int,int,int>{ (abs(x) + abs(y)) * 2 - 1, x, y });
  }

  x = get<1>(len);
  y = get<2>(len);

  return len;
}

long long logic_machine(long long x, long long y, string& s){
  deque<int> dq;
  for(auto i : range(s.size()) ){
    if(s[i] == 'c') dq.push_back(x);
    else if(s[i] == 'w') dq.push_back(y);
    else if(s[i] == 'C'){
      long long a = dq.back(); dq.pop_back();
      long long b = dq.back(); dq.pop_back();
      dq.push_back(a+b);
    }else if(s[i] == 'W'){
      long long a = dq.back(); dq.pop_back();
      long long b = dq.back(); dq.pop_back();
      dq.push_back(a-b);
    }else{
      abort();
    }
  }
  if(dq.size() != 1) abort();
  return dq.back();
}

string solver(long long x, long long y, long long z){
  if((x==0 || y==0) && z==0){
    return ( x==0?"c" : "w");
  }
  if(x==0 && y==0 && z!=0){
    return ("mourennaihasimasenn");
  }

  if(x==0 && y!=0){

    if(z%y != 0){
      return ("mourennaihasimasenn");
    }else{
      int k = z/y;
      if(2*k-1 <= 10000){
        return ( "w"_s * k + "C"_s * (k-1) );
      }else{
        return ("mourennaihasimasenn");
      }
    }
    return 0;
  }

  if(y==0 && x!=0){

    if(z%x != 0){
      return ("mourennaihasimasenn");
    }else{
      int k = z/x;
      if(2*k-1 <= 10000){
        return ( "c"_s * k + "C"_s * (k-1) );
      }else{
        return ("mourennaihasimasenn");
      }
    }
    return 0;
  }

  long long u,v;
  auto l = check(x,y, u,v, z);

  eprintln( get<0>(l), get<1>(l), get<2>(l) );

  long long un,ko;
  long long g = extgcd(x,y, un,ko);
  un *= z/g;
  ko *= z/g;

  if( u*x + y*v != z ){
    if(un*x + y*ko == z){
      abort();
    }
    return ("mourennaihasimasenn");
  }

  if( (abs(u) + abs(v))*2 - 1 <= 10000 ){
    string ans;
    if(u>0){
      ans += "w"_s * abs(v);
      ans += "c"_s * abs(u);

      ans += "C"_s * (abs(u)-1);
      if(v>0){
        ans += "C"_s * abs(v);
      }else{
        ans += "W"_s * abs(v);
      }
    }else{
      ans += "c"_s * abs(u);
      ans += "w"_s * abs(v);

      ans += "C"_s * (abs(v)-1);
      if(u>0){
        ans += "C"_s * abs(u);
      }else{
        ans += "W"_s * abs(u);
      }
    }
    long long val = logic_machine(x,y,ans);
    eprintln(val);
    assert(val == z);

    return (ans);

  }else{
    return ("mourennaihasimasenn");
  }

}

int main(){
  long long x,y,z;
  cin >> x,y,z;

  auto ans1 = solver(x,y,z);
  println(ans1);
  // auto ans2 = solver(y,x,z);

  // if(ans1.size() > 10000){
  //   ans1 = "mourennaihasimasenn";
  // }
  // if(ans2.size() > 10000){
  //   ans2 = "mourennaihasimasenn";
  // }

  // for(auto& c : ans2){
  //   if(c == 'c') c = 'w';
  //   else if(c == 'w') c = 'c';
  // }

  // if((ans1 != "mourennaihasimasenn" || ans2 != "mourennaihasimasenn") && 
  //    (ans1 == "mourennaihasimasenn" || ans2 == "mourennaihasimasenn")
  //   ){
  //   println(ans1 == "mourennaihasimasenn" ? ans2 : ans1);
  // }else{
  //   println( ans1.size() < ans2.size() ? ans1 : ans2);
  // }
  return 0;
}
//💩