#include <iostream> #include <cstdio> #include <cmath> using namespace std; int main(){ int h1,h2,m1,m2,s1,s2,sum,h3,m3,s3; scanf("%d:%d:%d",&h1,&m1,&s1); scanf("%d:%d:%d",&h2,&m2,&s2); sum=abs(h1*3600+m1*60+s1-h2*3600-m2*60-s2); h3=sum/3600; m3=sum/60%60; s3=sum%60; printf("%d:%.02d:%.02d\n",h3,m3,s3); return 0; } |
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