9
Imprimir todos os quadrados resistentes de 3 por 3
Um quadrado robusto (semelhante a um quadrado mágico ) é um arranjo dos números inteiros 1 a N 2 em uma grade N por N, de modo que cada sub-grade 2 por 2 tenha a mesma soma. Por exemplo, para N = 3, um quadrado robusto é 1 5 3 …
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