#include<iostream>
using namespace std;
int main()
{
   int a,b,c,num;
   string s;int qa[2],qb[2],qc[2];
   while(cin>>a>>b>>c)
   { 
     if(a==0&&b==0&&c==0)break;
     int result=0;
     cin>>s;qa[0]=0;qb[0]=0;qc[0]=0;
     while(s!="#")
     {
         cin>>num;
         string s1=string(s.begin(),s.begin()+2);
         string s2=string(s.begin()+3,s.end());
         int time=((s[0]-48)*10+s[1]-48)*60+(s[3]-48)*10+s[4]-48; 
         if((num<=2)&&(num>0))
         {
          if(qa[0]==0){qa[0]=time+30;result+=num;}
          else
           if(time+30>=qa[0])
           {qa[0]=qa[0]+30;result+=num;}
         }      
         if((num>2)&&(num<=4))
         {
           if(qb[0]==0){qb[0]=time+30;result+=num;}
           else
           if(time+30>=qb[0])
           {qb[0]=qb[0]+30;result+=num;}
         }
         if((num>4)&&(num<=6))
         {
          if(qc[0]==0){qc[0]=time+30;result+=num;}
          else 
          if(time+30>=qc[0])
           {qc[0]=qc[0]+30;result+=num;}
         }
         cin>>s;
      }
      cout<<result<<endl;
   }
return 0;
}