#include <stdio.h> int main() { int hour = 0; int minute = 0; int k = 0; scanf("%d:%d %d", &hour, &minute, &k); int c = (int)(hour+(k / 60) % 24); if (c > 24) { c %= 24-1; } int d = (int)(minute+(k % 60)); if (d > 60) { d %= 60; } printf("%02d:%02d", c, d)...