【手残神器】妈妈再也不用担心我把main打成mian了！！！！【整活向】

const words = ['include', 'cstdio', 'main'];
const left = 'qwertasdfgzxcv';
var L = {}, word, l, r, out = '';
left.split('').forEach(x => L[x] = true);
var dfs = (p, q, c) =>  {
	if (!l[p] && !r[q] && c != word)
		out += '#define ' + c + ' ' + word + '\n';
	if (l[p]) dfs(p+1, q, c+l[p]);
	if (r[q]) dfs(p, q+1, c+r[q]);
}
words.forEach(w => {
	word = w; l = ''; r = '';
	word.split('').forEach(x => L[x] ? l += x : r += x);
	dfs(0, 0, '');
})
console.log(out);