题面：

有个程序在所有输出NO的点上输出为：

NO
YES
.....
.....

spj会判为 PE Extra information in the output file

我想使这个程序跑过去，如何改spj？？

部分spj

	string a1 = ans.readString();
	string res = ouf.readString();
	if (res != "YES" && res != "NO")
	{
		quitf(_wa, "answer must be \"YES\" or \"NO\".");	
	}
	if (a1 != res)
	{
		quitf(_wa, "answer is wrong.");
	}
	if (res == "NO\n" || res == "NO")
	{
		quitf(_ok, "answer is accepted.");
	}
	int n = inf.readInt();
    ....
    ....
    ....