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2014-11-09T21:13:08+02:00
X = 1203 + 2( 1 + 2 + ... + 1202 ) = 1203 + 2 * 1202 * 1203 / 2 = 1203 +
 1202 * 1203 = 1203( 1 + 1202 ) = 1203^2 ( am folosit suma Gauss );

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