题解 | #小乐乐定闹钟#

#include <stdio.h>

int main() {
    int hour1,hour2,minute;    //现在时间 hour1:hour2，要睡多久
    scanf("%d:%d %d",&hour1,&hour2,&minute);
    hour1 = (hour1+(minute+hour2)/60)%24;
    hour2 = (minute+hour2)%60;
    printf("%02d:%02d",hour1,hour2);
    return 0;
}