#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
int INF = 1e9;
int MOD = 1e9+7;
ll gcd (ll a,ll b){
    if(!b)return a;
    return gcd(b,a%b);
}
main(){
    ll x,y,z;
    cin >> x >> y >> z;
    if(z % gcd(x,y)){
        cout << "NO" << endl;
        return 0;
    }
    ll min = INF;
    pair<ll,ll> ans = make_pair(INF,INF);
    for(ll i = -100;i < 100;i++){
        for(ll j = -100;j < 100;j++){
            if(x*i + y*j == z)if(llabs(i)+llabs(j) < min){
                min = llabs(i)+llabs(j);
                ans = make_pair(i,j);
            }
        }
    }
    ll a = ans.first,b = ans.second;
    if(llabs(a)*2+llabs(b)*2 > 20000){
        cout << "NO" << endl;
        return 0;
    }
    string str;
    if(a < b || a == 0){
        str += string(llabs(b),'w') + string(llabs(b)-1,'C');
        if(a == 0)goto print;
        str += string(llabs(a),'c') + string(llabs(a)-1,'C');
        str += (b<0?"W":"C");
    }else{
        str += string(llabs(a),'c') + string(llabs(a)-1,'C');
        if(b == 0)goto print;
        str += string(llabs(b),'w') + string(llabs(b)-1,'C');
        str += (a<0?"W":"C");
    }
    print:
    if(str.length() > 10000)cout << "NO" << endl;
    else cout << str << endl;
}