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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
1 5
5 2
 got on 
7 1
3 4
1 1
0 0
 in bus
8 3
3 3
 altogether


Solution

 
A
B
C
D
E
 got off 
0 0
1 5
5 2
4 3
3 3
 got on 
2 7
7 1
3 4
1 1
0 0
 in bus
2 7
8 3
6 5
3 3
 altogether
9
11
11
6


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