#include <stdio.h> int main() { int a, b,k; scanf("%d:%d %d",&a,&b,&k); int hour = a+(k/60); if(hour>=23) { hour =hour-(hour/24)*24; } int minute = b+(k-((k/60)*60)); if(minute>60) { minute = minute - 60; hour++; } printf("%02d:%02d",hour,minute); return 0...