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Buses 2

Instructions:

The table describes the number of passengers entering and leaving at stations A, B, C ... Bus arrives without passengers at the first station. All passengers get off on the last station. We do keep rules of decency - first get off and then get in.

Example

 
A
B
C
D
E
 got off 
0 0
6 5
 got on 
6 2
4 3
4 4
0 0
 in bus
3 7
8 4
 altogether
14


Solution

 
A
B
C
D
E
 got off 
0 0
0 4
5 4
6 3
6 5
 got on 
3 7
6 2
4 3
4 4
0 0
 in bus
3 7
9 5
8 4
6 5
 altogether
10
14
12
11


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