I zi I---I }
II zi I---I+25 } 1050 MUSTE
III zi I---I+25+25 }
IV zi I---I+25+25+25 }
--------------------------------------------------
25+25+25+25+25+25=150 MUSTE
1050-150=900 (4 SEGM. EGALE)
900:4=225( MUSTE IN PRIMA ZI)
225+25=250(MUSTE IN A II ZI)
225+50=275(MUSTE IN A IIIA ZI)
225+75=300(MUSTE IN A IV ZI)
VERIFICARE:225+250+275+300=1050 MUSTE