35 lines
768 B
C++
35 lines
768 B
C++
#include<stdio.h>
|
|
int main(){
|
|
int h,m,s,a,b,c,T;
|
|
scanf("%d",&T);
|
|
while(T--) {
|
|
scanf("%d%*c%d%*c%d",&h,&m,&s);
|
|
scanf("%d%*c%d%*c%d",&a,&b,&c);
|
|
a=a%12;
|
|
s=s-c;
|
|
if(s<0) {
|
|
s+=60;
|
|
m--;
|
|
if(m<0){
|
|
m+=60;
|
|
h--;
|
|
if(h<0) h+=12;
|
|
}
|
|
}
|
|
m-=b;
|
|
if(m<0){
|
|
m+=60;
|
|
h--;
|
|
if(h<0) h+=12;
|
|
}
|
|
h=(h-a+12)%12;
|
|
if(h<10) printf("0%d:",h);
|
|
else printf("%d:",h);
|
|
if(m<10) printf("0%d:",m);
|
|
else printf("%d:",m);
|
|
if(s<10) printf("0%d\n",s);
|
|
else printf("%d\n",s);
|
|
}
|
|
return 0;
|
|
}
|