附代码
#include<stdio.h>
int main()
{
	int n;
	scanf("%d",&n);
	while(n--)
	{
		int a,b;
		scanf("%d:%d",&a,&b);
		if (b)
		{
			printf("0\n");
			continue;
		}
		if(a>12&&a<24)
			printf("%d\n",a-12);
		else if(a>=0&&a<=12)
			printf("%d\n",a+12);
	}
	return 0;
}