我发现了A+B的迷惑写法
#include <bits/stdc++.h>
#define _ int
#define __ cin
#define ___ >>
#define ____ cout
#define _____ <<
#define ______ +
using namespace std;
int main(void) {
_ _______, ________;
__ ___ _______ ___ ________;
____ _____ _______ ______ ________;
return 0;
}