class Solution {
public:
    int countPoints(string ri) {
        int n=ri.size();
        vector<bool> r(10,false);
        vector<bool> g(10,false);
        vector<bool> b(10,false);
        for(int i=1;i<n;i=i+2)
        {
            if(ri[i-1]=='R')
            {
                r[ri[i]-'0']=true;
            }
            else if(ri[i-1]=='G')
            {
                g[ri[i]-'0']=true;
            }
            else  if(ri[i-1]=='B')
            {
                b[ri[i]-'0']=true;
            }
        }
        int c=0;
        for(int i=0;i<10;i++)
        {
            if(r[i]==true && g[i]==true && b[i]==true)
            {
                c++;
            }
        }
        return c;
    }
};