#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<algorithm>
#include<vector>
#include<string>
#include<sstream>
using namespace std;

int gcd(int a,int b)
{
	if(b==0)return a;
	else return gcd(b,a%b);
}

int main()
{
	int x,y,z;
	cin>>x>>y>>z;
	if(z==0)
	{
		cout<<endl;
		return 0;
	}
	else if(x==0&&y==0)
	{
		cout<<"mourennaihasimasenn"<<endl;
		return 0;
	}
	else if(x==0)
	{
		if(z%y==0)
		{
			for(int i=0;i<z/y;i++)cout<<"w";
			for(int i=0;i<z/y-1;i++)cout<<"C";
			cout<<endl;
			return 0;
		}
		else
		{
			cout<<"mourennaihasimasenn"<<endl;
			return 0;
		}
	}
	else if(y==0)
	{
		if(z%x==0)
		{
			for(int i=0;i<z/x;i++)cout<<"c";
			for(int i=0;i<z/x-1;i++)cout<<"C";
			cout<<endl;
			return 0;
		}
		else
		{
			cout<<"mourennaihasimasenn"<<endl;
			return 0;
		}
	}
	int gcdxy=gcd(max(x,y),x+y-max(x,y));
	if(gcdxy!=1)
	{
		int gcdgcdz=gcd(max(gcdxy,z),gcdxy+z-max(gcdxy,z));
		if(gcdgcdz<gcdxy)
		{
			cout<<"mourennaihasimasenn"<<endl;
			return 0;
		}
		x/=gcdgcdz;
		y/=gcdgcdz;
		z/=gcdgcdz;
	}
	int n,m;
	stringstream s;
	for(m=1;;m++)
	{
		if((1-y*m)%x==0)
		{
			n=(1-y*m)/x;
			break;
		}
	}
	n=(-1)*n;
	for(int i=0;i<n;i++)s<<"c";
	for(int i=n;i<n+m;i++)s<<"w";
	for(int i=n+m;i<n+m+m-1;i++)s<<"C";
	for(int i=n+m+m-1;i<n+m+m+n-1;i++)s<<"W";
	for(int i=0;i<z;i++)cout<<s.str();
	for(int i=0;i<z-1;i++)cout<<"C";
	cout<<endl;
	return 0;
}