HELP

CODE：

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int ti=10,s,v;
	cin>>s>>v;
	ti+=s/v;
	if(s%v!=0)
		ti+=1;
	ti+=1;
	if(ti<=60)
	{
		cout<<"07"<<":";
		if(ti==60)
			cout<<"00"<<endl;
		else if(ti<10)
			cout<<"0"<<60-ti<<endl;
		else
			cout<<60-ti<<endl;
	}
	else
	{
		int h;
		h=ti/60;
		ti%=60;
		if(h<=7)
		{
			cout<<"0"<<7-h<<":";
			if(ti==0)
				cout<<"00"<<endl;
			else if(60-ti<10)
				cout<<"0"<<60-ti<<endl;
			else
				cout<<60-ti<<endl;
		}
	}
	return 0;
}

#3#8#9#10都没过