para guardar tu progreso/estadísticas de crucigramas
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Zach Bogartconstructor · hace alrededor de 2 meses
Quick story: I was once on a flight where I was reading a book on Paul Erdos. The passenger commented on it and mentioned he worked in the area of mathematics. So I asked what his Erdos number was, and he proudly stated two.
Zach Bogartconstructor · hace alrededor de 2 meses