/*
TASK:chai
LANG:C++
*/
#include<iostream>
#include<string>
using namespace std;
int n,c,brl,brr;
int main()
{
    string s[512];
    cin>>n>>c;
    for(int i=0; i<n+c; i++) cin>>s[i];
    for(int i=0; i<n+c; i++)
    {
     if(s[i][0]=='L') brl++;
     if(s[i][0]=='R') brr++;
     if(s[i][0]=='P')
     {
      if(brr>=brl)
      {
       cout<<brl<<" R"<<endl;
       brr-=brl;
      }
      if(brl>brr)
      {
       cout<<brr<<" L"<<endl;
       brl-=brr;
      }
     }
    }
    cout<<brl<<endl;
    cout<<brr; 
    return 0;
}
