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Triangles with pranksters

Instructions:

Insert numbers into empty fields in triangle (grape). The sum of two neighbouring numbers in one row must be equal to number below those fields. You may use only "pranskters" - numbers, which are known and located below triangle (grape).

Example

16
10
3
6
  
9
  
13
  
22
  
26
  
39
  
61
  

Solution

16
10
3
6
26
13
9
39
22
61

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