这破题服了

#include <bits/stdc++.h>
using namespace std;

void change(string &s)
{
	int n = s.length();
	string tmp = "";
	for (int i = 0; i < n; i++)
	{
		if (isalpha(s[i]))
		{
			tmp += s[i];
		}
	}
	s = tmp;
}

int main()
{
	string s, smx, smi;
	int mx = -1, mi = 1000;
	while (cin >> s)
	{
		change(s);
		int n = s.length();
		if (n > mx)
		{
			mx = n;
			smx = s;
		}
		if (n < mi)
		{
			mi = n;
			smi = s;
		}
	}
	cout << smx << '\n' << smi;
	return 0;
}