#include<iostream>
using namespace std;
class Time
{
      private:
              int second;
              int minute;
      public:
             Time();
             Time(int a,int b):minute(a),second(b){}
             Time operator ++();
             void display();
      
}; 
      
Time::Time()
{
            second=0;
            minute=0;
}

Time Time::operator ++()
{
        second++;
        if(second>=60) {second=0;  minute++;  }
        return *this;       
               
}

void Time::display()
{
     cout<<minute<<":"<<second<<endl;
}

int main()
{
    Time t(34,5);
    int i;
    for(i=0;i<61;i++)
          {  ++t;
             t.display();        
                     
          }
     system("pause"); 
     return 0; 
    
    }