提交时间:2020-07-29 10:32:50

运行 ID: 5299

#include<bits/stdc++.h> using namespace std; int main(){ int n,s,f; cin>>n; s=n/3600; n-=s*3600; f=n/60; n-=f*60; printf("%d:%d:%d",s,f,n); return 0; }