#include<iostream>
#include<map>
using namespace std;
int main()
{
map <int,int> mymap;
int n,a,b,m,x;
cin>>n;
for(int i=0;i<n;i++)
{
  cin>>a>>b;
   mymap[a]=b;
}
cin>>m;
char ch;
while(m--)
{
  cin>>ch;
  cin>>x;
  if(ch=='+')
  {
    bool flag=0;
    for(map <int,int>::iterator it=mymap.begin();it!=mymap.end();it++)
    {
      if(x==it->first)
         {mymap[x]++;flag=1;break;}
    }
    if(flag==0)
     mymap[x]=1;
  }
  else if(ch=='-')
  {
    mymap[x]--;
  }
  else {
   long long ans=0;
   map<int,int>::iterator i=mymap.begin();
   for(;i!=mymap.end();i++)
   {
     ans+=(x%i->first)*i->second;
   }
   cout<<ans<<endl;
  }
}
return 0;
}
 

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MwoxIDQKMyAyCjIgMgo2Cj8gMTAKPyA4CisgNAo/IDkKLSAyCj8gOA==

3
1 4
3 2
2 2
6
? 10
? 8
+ 4
? 9
- 2
? 8