Divide 101 coins into three heaps, 50 for the two, and the other
1. 50 heap items, if the weight is equal.
It indicates that the counterfeit currency is the same
Take a real coin and compare it with the counterfeit coin to determine which coin is heavier.
If the weight is not equal, it means that the remaining coin is true, and then there is a false one in the two piles of 50, and the balance is not balanced.
Using a real coin is obviously different from the two.
Another idea is that if there is only one counterfeit currency, you can determine whether the counterfeit currency is heavy or the real currency is heavy.
So yes. Let's take a heap and divide it into 25 portions, once called,
If the weight is equal, the counterfeit currency is in another pile.
Otherwise, the counterfeit currency will be in the previous 50 piles.
Then, based on the previous call, the two heap 50 coins can be used to determine whether the counterfeit coin is heavy or the real coin is heavy.