题解 | #小乐乐定闹钟#

#include <iostream>

#include <iomanip>

#include <cmath>

using namespace std;

int main()

{

 int hour,minute,k;

 scanf("%d:%d %d", &hour, &minute, &k);

 hour = hour + k/60;

 minute = minute + k%60;

 if (minute > 60)

 {

  hour = hour + minute/60;

  minute = minute%60;

 }

 if(hour>24)

 {

  hour = hour % 24;

 }

    printf("%02d:%02d",hour, minute);

 }