#include<stdio.h> #include<string.h> int main() { int h1,m1,s1; int h2,m2,s2; int h,m,s; scanf("%d:%d:%d",&h1,&m1,&s1); scanf("%d:%d:%d",&h2,&m2,&s2); if (h1>h2) h=h1-h2; else h=h2-h1; if(m1>m2) m=m1-m2; else m=m2-m1; if(s1>s2) s=s1-s2; else s=s2-s1; printf("%d:%02d:%02d",h,m,s); return 0; } |
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