题解：无（注意下四舍五入和输出格式即可）

题目地址：https://www.nowcoder.com/questionTerminal/fabbb85fc2d342418bcacdf0148b6130

 1 /**
 2 *
 3 *作者:Ycute
 4 *时间:2019-11-02-11.19.47
 5 *题目题意简单描述:无
 6 */
 7 
 8 
 9 #include<iostream>
10 #include<cmath>
11 #include<cstring>
12 #include<algorithm>
13 #include<vector>
14 using namespace std;
15 
16 
17 int main(){
18     int c1,c2;
19     scanf("%d %d",&c1,&c2);
20     double temp=(c2-c1)*1.0/100;
21     int s=(int)(temp+0.5);
22     int hh=s/3600;
23     int mm=s%3600/60;
24     int ss=s%60;
25     printf("%02d:%02d:%02d\n",hh,mm,ss);
26     return 0;
27 }