#include <bits/stdc++.h>
using namespace std;

int func(long long a,long long b){
    return max(2*abs(a-b)-1,2*abs(a+b-1)+1);
}

int main(){
    long long x,y,z;
    cin>>x>>y>>z;
    long long temp;
    int min=10001;
    vector<long long> memo(2);
    for(long long i=5000;i>-5000;i--){
        if(abs(z-y*i)%x==0){
            if(min>func(i,(z-y*i)/x)){
                min=func(i,(z-y*i)/x);
                memo={i,(z-y*i)/x};
            }
        }
    }
    if(min==10001){
        cout<<"NO"<<endl;
        return 0;
    }
    vector<int> ord={(memo[0]>memo[1]?0:1),1-(memo[0]>memo[1]?0:1)};
    for(int i=1;i>=0;i--){
        for(int j=0;j<abs(memo[ord[i]]);j++){
            cout<<((ord[i])?'c':'w');
        }
    }
    if(memo[0]<=0&&memo[1]<=0){
        cout<<"wW";
    }
    for(int i=0;i<2;i++){
        cout<<(memo[ord[i]]>0?'C':'W');
    }
    cout<<endl;
}