include <stdio.h>
int main(int argc, char *argv[])
{
int h,m,mins,time;
printf("请输入时间和需要经过的分钟:");
scanf("%d:%d %d",&h,&m,&mins);
time= h*60+m+mins;
if(time>1440){
time=time-1440;
printf("%02d:%02d\n",time/60,time%60);
}
else{
printf("%02d:%02d\n",time/60,time%60);
}
return 0;
}