# include<stdio.h> # include<math.h> int main(void) { int h1,m1,s1,h2,m2,s2,h3,m3,s3,sum1,sum2,sum; scanf("%d:%d:%d",&h1,&m1,&s1); scanf("%d:%d:%d",&h2,&m2,&s2); sum1 = h1*3600+m1*60+s1; sum2 = h2*3600+m2*60+s2; sum = abs(sum1-sum2); h3 = sum/3600; m3 = sum%3600/60; s3 = sum%3600%60; printf("%d:%02d:%02d\n",h3,m3,s3); return 0; } |
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