#include <iostream>
using namespace std;
 
int main() {
	// your code goes here
	int n;
	scanf("%d",&n);
	while(n--)
	{
		int h,m;
		scanf("%d:%d",&h,&m);
//		printf("%d %d\n",h,m);
		int u1=0,u=0,l=11;
		u1 = 23-h;
		if(m==0)u1++;
//		printf("u1 %d\n",u1);
		for(int i=0;i<(u1==24?23:u1);i++)
		{
//			printf("u %d l %d\n",u,l);
			u+=l;
			l--;
			if(l==0)l=12;
		}
//		printf("u %d\n",u);
		u += 23-h;
		if(m<=30)u++;
		printf("%d\n",u);
	}
	return 0;
}

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NAoyMzowMAowOToxMQoyMzozMQowMDowMA==

4
23:00
09:11
23:31
00:00