#include<bits/stdc++.h>
using namespace std;
using ll=long long;
template<typename T>
ostream& operator << (ostream &out,const vector<T>&x){
	if(x.empty())return out<<"[]";
	out<<'['<<x[0];
	for(int len=x.size(),i=1;i<len;i++)out<<','<<x[i];
	return out<<']';
}
template<typename T>
vector<T> ary(const T *a,int l,int r){
	return vector<T>{a+l,a+1+r};
}
template<typename T>
void debug(T x){
	cerr<<x<<'\n';
}
template<typename T,typename ...S>
void debug(T x,S ...y){
	cerr<<x<<' ',debug(y...);
}
ll a,b,c;
char A='A',B='B',C='C';
void print(ll x,char y='D'){
	if(x==-1)cout<<"Rubble!";
	else cout<<y<<' '<<x;
	cout<<endl,exit(0);
}
bool flag;
void swp(){
	ll mn=min({a,b,c});
	if(mn==a);
	else if(mn==b){
		swap(b,a),swap(B,A);
		swap(b,c),swap(B,C);
	}else{
		swap(b,c),swap(B,C);
		swap(a,b),swap(A,B);
	}
	if(b>c)swap(b,c),swap(B,C),flag=1;
}
int main(){
	cin>>a>>b>>c;
	swp();
	ll t=min(b-a,c-b);
	b-=t,c-=t*2;
	if(a==b&&b==c)print(-1);
	t=min(a-1,(c-a-1)/3);
	if(a==b){
		a-=t,b-=t,c-=t*4;
	}else{
		b-=t*3,c-=t*3;
	}
	// debug(a,b,c,A,B,C,flag);
	for(;a&&b&&c;){
		swp();
		if((a==b&&b+1==c)||(a+1==b&&b==c)){
			ll t=min({a/3-1,b/3-1,c/3-1});
			if(t>0)a-=t*3,b-=t*3,c-=t*3;
			// debug(a,b,c,A,B,C,flag);
		}
		int da=0,db=0,dc=0;
		if(b>=c+flag)db++;
		else dc++;
		if(c>=a+flag)dc++;
		else da++;
		if(a>=b+flag)da++;
		else db++;
		a-=da,b-=db,c-=dc;
		// debug(a,b,c,A,B,C,flag);
	}
	swp();
	if(b==c)print(-1);
	else if(b<c)print(c-b,C);
	else print(b-c,B);
	return 0;
}