U112825 [COCI2007#5] NATRIJ

After an unsuccessful attempt at claiming power peacefully, Borko has decided to tear down Mirko's village hall, which was built for him out of cardboard by his loyal servants. For this he will use Mirko's microprocessor (which was stolen from him by Borko's friend Zvonko), a bucket of water and a bag of sodium. He will enter the time of the "explosion" into the microprocessor, and it will drop the sodium in the water after the time is up. Borko knows the current time and when he wants the explosion. He is not very fond of arithmetic and Zvonko is currently playing with marbles in his back yard so he can't help him. Write a program that calculates the time to the explosion (this is the time Borko will enter into themicroprocessor). The time Borko wants is at least one second and at most $24$ hours.

The first line of input contains the current time in hh:mm:ss format (hours, minutes, seconds). The hours will be between $0$ and $23$ (inclusive) and the minutes and seconds between $0$ and $59$. The second line contains the time of the explosion in the same format.

Output the desired time on a single line, in the same format as the times in the input.

### 题目翻译 在和平夺取权力的尝试失败后，博尔科决定拆除米尔科的 村政厅是他的忠实仆人用硬纸板为他建造的。 为此，他将使用Mirko的微处理器(这是Borko的朋友Zvonko从他那里偷来的)，一桶水和一袋钠。他会在微处理器中输入“爆炸”的时间，时间一到，微处理器就会将钠滴入水中。 博尔科知道现在的时间和他想要爆炸的时间。他不太喜欢算术，而Zvonko现在正在他的后院玩弹珠，所以他不能帮助他。 编写一个程序来计算爆炸的时间(这是Borko进入微处理器的时间)。Borko想要的时间至少是一秒，最多是 $24$ 小时。 输入的第一行包含当前时间，格式为 `hh:mm:ss` (小时、分钟、秒)。 小时在 $0$ 至 $23$ (包括)之间，分钟和秒在 $0$ 至 $59$ 之间。 第二行包含了相同格式的爆炸时间。 将所需的时间以与输入中的时间相同的格式输出到一行中。