Răspuns :
[(1000-100):100+91]:[(199+201):4]=
[900:100+91]:[400:4]=
[9+91]:[100]=
[100:100]=
1
[900:100+91]:[400:4]=
[9+91]:[100]=
[100:100]=
1
(10:100:100+91):(400:4)--(10:1+91):100--(10+91):100--101:100--1(rest1) sper ca te-am ajutat