#include<stdio.h> #include<math.h> #include<stdlib.h> int main() { int s1,f1,m1,s2,f2,m2,c,h1,h2,s3,f3,m3; scanf("%d:%d:%d",&s1,&f1,&m1); scanf("%d:%d:%d",&s2,&f2,&m2); h1=s1*3600+f1*60+m1; h2=s2*3600+f2*60+m2; c=fabs(h1-h2); s3=c/3600; f3=(c-s3*3600)/60; m3=c%60; printf("%d:%d:%d",s3,f3,m3); return 0; } |
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