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#include <stdio.h>
#include <unistd.h>

int main(int argc, char** argv){
  int min; int sec;
  if (argc != 2) return 1;
  sscanf(argv[1], "%d:%d", &min, &sec);
  int time = min*60 + sec;
  for (int i = 1; i<=time; i++){
    printf("%d:%02d/%d:%02d\r", (i-i%60)/60, i%60, min, sec);
    fflush(stdout);
    sleep(1);
  }
  printf("\n");
  return 0;
}