#include<stdio.h> #include<math.h> int main(){ int h1,h2,m1,m2,s1,s2,n1,n2; scanf("%d:%d:%d",&h1,&m1,&s1); scanf("%d:%d:%d",&h2,&m2,&s2); n1=abs(h1*3600+s1+m1*60-h2*3600-s2-m2*60); printf("%d:%02d:%02d\n",n1/3600,(n1/60)%60,n1%60); return 0; } |
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