为何超时 --java D题
BigInteger b1 = new BigInteger(next()); BigInteger b2 = new BigInteger(next()); out.println(b2.gcd(b1.mod(b2)));
BigInteger b1 = new BigInteger(next()); BigInteger b2 = new BigInteger(next()); out.println(b2.gcd(b1.mod(b2)));
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