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Problem F: 教学楼比大树高多少米?
Problem F: 教学楼比大树高多少米?
[Creator :
]
Time Limit :
1.000
sec
Memory Limit :
128 MiB
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Solved: 6
Submit Num: 8
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Description
教学楼高a米,旁边的大树高b米,教学楼比大树高多少米?
Sample Input
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12 8
Sample Output
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4