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Cel mai inteligent răspuns!
2014-08-08T16:53:26+03:00
D:I=C, +R
R<I  =>R={0,1,2,3,4,5,6,7,8}

S=0+1+2+....+8

S=(1+8)*8/2
S=9*4
S=36
2 5 2