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