AlgorithmOJ

2026-11-04 13:17:21 

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Time Limit: 2000ms
Memory Limit: 131072KB
This problem will be judged on HDU. Original ID: 4699
64-bit integer IO format: %I64d      Java class name: Main
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Description

Sample Input 

8
I 2
I -1
I 1
Q 3
L
D
R
Q 2

Sample Output 

2
3

Source

2013 Multi-University Training Contest 10
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