#include<iostream> 
#include<string> 
#include <algorithm> 
using namespace std; 
int main(){ 
    string n; 
    cin>>n; 
    int r,g,b; 
    r=g=b=0; 
    sort(n.begin(),n.end()); 
    cout<<n<<endl; 
    for(int i=0;i<n.size();i++)
    { 
        if(n[i]=='R')
        { 
            r++; 
        }
        else if(n[i]=='G')
        { 
            g++; 
        }
        else if(n[i]=='B')
        { 
            b++; 
        } 
    } 
    if(r/g/2==b/3)
    { 
        cout<<r; 
    }
    else
    { 
        if(r<=g/2&&r<=b/3)
        { 
            cout<<r; 
        }
        else if(g/2<=r&&g/2<=b/3)
        { 
            cout<<g/2; 
        }
        else if(b/3<=r&&b/3<=g/2)
        { 
            cout<<b/3; 
        } 
    } 
    return 0; 
}