17 lines
389 B
Python
17 lines
389 B
Python
h1, m1, s1 = map(int, input().split(":"))
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h2, m2, s2 = map(int, input().split(":"))
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if h1 == h2 and m1 == m2 and s1 == s2 :
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print("24:00:00")
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else :
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t1 = h1*3600 + m1*60 + s1
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t2 = h2*3600 + m2*60 + s2
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diff = t2 - t1 if t2 > t1 else t2 - t1 + 24 * 3600
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h = diff // 3600
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m = (diff % 3600) // 60
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s = diff % 60
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print(f"{h:02d}:{m:02d}:{s:02d}")
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