4620: P1458 [USACO2.1] 顺序的分数 Ordered Fractions

Memory Limit：128 MB Time Limit：1.000 S
Judge Style：Text Compare Creator：
Submit：6 Solved：6

Description

Input

Output

Sample Input Copy 

5

Sample Output Copy 

0/1
1/5
1/4
1/3
2/5
1/2
3/5
2/3
3/4
4/5
1/1

HINT

Source/Category

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