#include <stdio.h>
  #include <stdlib.h>
   
  typedef struct{
  int hour;
  int minute;
  }Times;
   
  Times normalization (Times times){
  Times normalized = times;
  if(normalized.minute >= 60){
  normalized.hour += normalized.minute / 60;
  normalized.minute %= 60;
   
  }
  printf("%02d:%02d\n",normalized.hour,normalized.minute);
   
  return normalized;
  }
  int main(void){
  Times times;
  times.hour = 9;
  times.minute = 120;
  normalization (times);
  printf("%02d:%02d",times.hour,times.minute);
  return 0;
  }