菜菜鸟：
#include <iostream>
using namespace std;
int main()
{
 int h,m,t,stk;
 char rest;
 cin>>t;
 while(t--)
 {
  cin>>h>>rest>>m;
  if(m)
  stk=0;
  else
  stk=h+12;
  cout<<(stk>24?(stk-24):stk)<<endl;
 }
return 0;
}
//AC