#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;
int main()
{
	vector<char> vec1, vec2;
	vector <int> ans;
	string str1 = " ";
	string str2 = " ";
	char ch1;
	
	int result = 0;
	while (cin >> str1 >> str2)
	{
		vector<char> vec1, vec2;
		int hav = 0;
		for (size_t i = 0; i < str1.size(); i++)
		{
			ch1 = str1[i];
			vec1.push_back(ch1);
		}
		for (size_t i = 0; i < str2.size(); i++)
		{
			ch1 = str2[i];
			vec2.push_back(ch1);
		}
		
		for (vector<char>::iterator iter = vec1.begin(); iter != vec1.end(); iter++)
		{
			if (vec2.end() != std::find(vec2.begin(), vec2.end(), *iter))
			{
				hav++;
			}

		}
		

		if (hav != 0)
		{

			if (vec1.size() > vec2.size())
			{
				result = vec1.size() - hav;
				ans.push_back(result);
			}
			else
			{
				result = vec2.size() - hav;
				ans.push_back(result);
			}
		}
		else
		{

			result = vec1.size() + vec2.size();
			ans.push_back(result);
		}
	}
	
	for (size_t i = 0; i < ans.size(); i++)
		cout << ans[i] << endl;
	return 0;
}
 

不知道為什麼不能通過，線下測試時沒問題的。。。

不喜勿噴。