#include<stdio.h> int main(){ int s1,s2,m1,m2,f1,f2,z,temp; scanf("%d:%d:%d",&s1,&f1,&m1); scanf("%d:%d:%d",&s2,&f2,&m2); if(s1>s2){ temp=s1; s1=s2; s2=temp; temp=f1; f1=f2; f2=temp; temp=m1; m1=m2; m2=temp; } z=s2*3600+f2*60+m2-(s1*3600+f1*60+m1); s1=z/3600;z=z%3600; f1=z/60;z=z%60; printf("%d:%02d:%02d",s1,f1,z); return 0; } |
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