出现了同样的 bug。

#include "testlib.h"
#include <bits/stdc++.h>

using namespace std;

int main(int argc, char** argv){
	registerTestlibCmd(argc,argv);
	double a, b;
	a = ouf.readDouble();
	b = ans.readDouble();
	if(abs(a - b) / max(1.0, b) <= 1e9)
		quitf(_ok, "Answer Correct!");
	quitf(_wa, "Wrong Answer!");
}