1 #include<iostream>
2 #include<stdio.h>
3 #include<string>
4
5 using namespace std;
6
7 int main()
8 {
9 //freopen("acm.acm","r",stdin);
10 int i;
11 int num;
12 int sum;
13 string s;
14 cin>>num;
15 while(num --)
16 {
17 cin>>s;
18 i = 0;
19 sum = 0;
20 while(1)
21 {
22 sum += s[i] - '0';
23 if(s[++i] != ':')
24 sum *= 10;
25 else
26 break;
27 }
28
29 if(s[++i] == '0' && s[++i] == '0')
30 {
31 if(sum == 12)
32 cout<<24<<endl;
33 else
34 cout<<(sum + 12) % 24<<endl;
35 }
36 else
37 {
38 cout<<0<<endl;
39 }
40
41 }
42 }
