Модуль: Systems of logical equations


Задача

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System of logical equations - 12

Теория

Sometimes in systems of logical equations there are not only x variables, but also y variables. However, this does not change anything, the solution is similar.

Задача

How many different solutions does a system of logical equations have?
x1*y1+x2*y2=1
x2*y2+x3*y3=1
x3*y3+x4*y4=1
x4*y4+x5*y5=1
x5*y5+x6*y6=1
x6*y6+x7*y7=1

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