开始：2020/4/30 20:00 结束：2020/5/4 20:00

签到

F5出来的关键代码如下

do
{
  v8 = getchar_0();
  v6 |= v8 ^ i ^ (i + (i ^ *(&v9 + (int)i)));
  v4 = i++;
}
while ( v8 && v8 != 10 && v8 != -1 );
if ( v6 )
  sub_400828(aFailed, 0LL, v3, v4);
else
  sub_400828(aCorrect, 0LL, v3, v4);

开始没看明白,后来看到v6=0才正确就晓得了

#include <iostream>

int main()
{
	int a[] = { 0x66,0x6D,0x63,0x62,0x7F,0x3A,0x55,0x6A,0x39,0x52,0x7A,0x37,0x51,0x13,0x33,0x23,0x43,0x46,0x29,0x3D,0x29,0x20,0x7F,0x1C,0x26,0x4D,0x31,0x14,0x50,0x5E,-24 };
	char flag[100] = {};
	for (int i = 0; i < 30; i++)
	{
		for (int v8 = ' '; v8 <= '}'; v8++)
			if (!(v8 ^ i ^ (i + (i ^ a[i]))))
				flag[i] = v8;
	}
	printf("%s", flag);
}

神光