#include<iostream>
using namespace std;
typedef long long ll;

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

void answer(ll a, ll b){
    int add = 0, sub = 0;
    if(a < 0){
        for(int i = 0; i < abs(a); i++) cout << "c";
        sub += (int)abs(a);
    }
    if(b < 0){
        for(int i = 0; i < abs(b); i++) cout << "w";
        sub += (int)abs(b);
    }
    if(a > 0){
        for(int i = 0; i < abs(a); i++) cout << "c";
        add += (int)abs(a)-1;
    }
    if(b > 0){
        for(int i = 0; i < abs(b); i++) cout << "w";
        add += (int)abs(b)-1;
    }
    while(add-- > 0)    cout << "C";
    while(sub-- > 0)    cout << "W";
    cout << endl;
}

int main(){
    int x, y, z;
    cin >> x >> y >> z;
    ll a, b;
    ll g = extgcd(x, y, a, b);
    
    if(z % g){
        cout << "NO" << endl;
        return 0;
    }

    a *= z/g, b *= z/g;
    // x*a + y*b = z

    ll alpha = a, beta = b, current = 1ll<<60;
    while(current >= abs(alpha) + abs(beta)){
        current = abs(alpha) + abs(beta);
        if((abs(alpha)+abs(beta))*2 - 1 <= 10000){
            answer(alpha, beta);
            return 0;
        }
        alpha -= y;
        beta += x;
    }
    
    alpha = a, beta = b, current = 1ll<<60;
    while(current >= abs(alpha) + abs(beta)){
        current = abs(alpha) + abs(beta);
        if((abs(alpha)+abs(beta))*2 - 1 <= 10000){
            answer(alpha, beta);
            return 0;
        }
        alpha += y;
        beta -= x;
    }

    cout << "NO" << endl;
    return 0;
}