#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(ll i=0;i<n;i++)
#define repl(i,l,r) for(ll i=(l);i<(r);i++)
#define per(i,n) for(ll i=(n)-1;i>=0;i--)
#define perl(i,r,l) for(ll i=r-1;i>=l;i--)
#define fi first
#define se second
#define ins insert
#define pqueue(x) priority_queue<x,vector<x>,greater<x>>
#define all(x) (x).begin(),(x).end()
#define CST(x) cout<<fixed<<setprecision(x)
#define rev(x) reverse(x);
using ll=long long;
using vl=vector<ll>;
using vvl=vector<vector<ll>>;
using pl=pair<ll,ll>;
using vpl=vector<pl>;
using vvpl=vector<vpl>;
const ll MOD=1000000007;
const ll MOD9=998244353;
const int inf=1e9+10;
const ll INF=4e18;
const ll dy[8]={1,0,-1,0,1,1,-1,-1};
const ll dx[8]={0,1,0,-1,1,-1,1,-1};
template <typename T> inline bool chmax(T &a, T b) {
  return ((a < b) ? (a = b, true) : (false));
}
template <typename T> inline bool chmin(T &a, T b) {
  return ((a > b) ? (a = b, true) : (false));
}

int main(){
  ll x,y,z;cin >> x >> y >> z;
  if(z==0){
    cout << "ccW" << endl;return 0;
  }
  if(x!=0&&z%x==0){
    ll f=z/x;
    if(f<=5000){
      rep(i,f)cout << "c";
      rep(i,f-1)cout << "C";
      cout << endl;return 0;
    }
  }
  if(y!=0&&z%y==0){
    ll f=z/y;
    if(f<=5000){
      rep(i,f)cout << "w";
      rep(i,f-1)cout << "C";
      cout << endl;return 0;
    }
  }
  for(ll i=1;i<=5000;i++){
    //cout << i << endl;
    ll need=z-x*i;
    if(y==0){
      if(need)continue;
      ll f=0;
      if(f+i<=5000){
        string s;
        rep(_,f)s+='w';
        rep(_,i)s+='c';
        rep(_,i-1)s+='C';
        rep(_,f)s+='W';
        cout << s << endl;return 0;
      }
    }
    if(need>=0){
      if(need%y)continue;
      ll f=need/y;
      if(f+i<=5000){
        string s;
        rep(_,f)s+='w';
        rep(_,i)s+='c';
        rep(_,i-1)s+='C';
        rep(_,f)s+='C';
        cout << s << endl;return 0;
      }
    }
    else{
      ll f=-need;if(f%y)continue;
      f/=y;
      if(f+i<=5000){
        string s;
        rep(_,f)s+='w';
        rep(_,i)s+='c';
        rep(_,i-1)s+='C';
        rep(_,f)s+='W';
        cout << s << endl;return 0;
      }
    }
  }
  for(ll i=1;i<=5000;i++){
    ll need=z-y*i;
    if(x==0){
      if(need)continue;
      ll f=0;
      if(f+i<=5000){
        string s;
        rep(_,f)s+='c';
        rep(_,i)s+='w';
        rep(_,i-1)s+='C';
        rep(_,f)s+='W';
        cout << s << endl;return 0;
      }
    }
    if(need>=0){
      if(need%x)continue;
      ll f=need/x;
      if(f+i<=5000){
        string s;
        rep(_,f)s+='c';
        rep(_,i)s+='w';
        rep(_,i-1)s+='C';
        rep(_,f)s+='C';
        cout << s << endl;return 0;
      }
    }
    else{
      ll f=-need;if(f%x)continue;
      f/=x;
      if(f+i<=5000){
        string s;
        rep(_,f)s+='c';
        rep(_,i)s+='w';
        rep(_,i-1)s+='C';
        rep(_,f)s+='W';
        cout << s << endl;return 0;
      }
    }
  }
  cout << "NO" << endl;
}