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https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
35 lines
768 B
C++
35 lines
768 B
C++
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#include<stdio.h>
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int main(){
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int h,m,s,a,b,c,T;
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scanf("%d",&T);
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while(T--) {
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scanf("%d%*c%d%*c%d",&h,&m,&s);
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scanf("%d%*c%d%*c%d",&a,&b,&c);
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a=a%12;
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s=s-c;
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if(s<0) {
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s+=60;
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m--;
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if(m<0){
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m+=60;
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h--;
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if(h<0) h+=12;
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}
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}
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m-=b;
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if(m<0){
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m+=60;
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h--;
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if(h<0) h+=12;
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}
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h=(h-a+12)%12;
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if(h<10) printf("0%d:",h);
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else printf("%d:",h);
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if(m<10) printf("0%d:",m);
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else printf("%d:",m);
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if(s<10) printf("0%d\n",s);
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else printf("%d\n",s);
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}
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return 0;
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}
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