Discussion @ 2111. Plato @ Timus Online Judge

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Discussion of Problem 2111. Plato

ToadMonster Why example is correct? [1] // Problem 2111. Plato 9 Dec 2019 15:03

Let we visit towns by distance ascending: 1, 2, 3
So total fine is : (6+5) + (5*2+3*2) + 3 = 11 + 16 + 3 = 30
Where am I wrong?

ToadMonster Re: Why example is correct? // Problem 2111. Plato 10 Dec 2019 12:53

My mistake:
Total fine is : (6+5) + (5*2+3*2) + 3*3 = 11 + 16 + 9 = 36