WA求助！！！

样例过了！！！

#include <bits/stdc++.h>
using namespace std;
string str1, str2;
bool flag = 1;
int ans1 = 0, ans2 = 0, ans3 = 0;

int main() {
	cin >> str1;
	str1 += ',';
	for (int i = 0; i < str1.size(); i++) {
		if (str1[i] != ',') {
			str2 += str1[i];
			if (isalnum(str1[i]) == 0 && str1[i] != '!' && str1[i] != '@' && str1[i] != '#' && str1[i] != '$')
				flag = 0;
			if (str1[i] >= '0' && str1[i] <= '9')
				ans1 = 1;
			if (str1[i] >= 'a' && str1[i] <= 'z')
				ans2 = 1;
			if (str1[i] >= 'A' && str1[i] <= 'Z')
				ans3 = 1;
		} else {
			if (str2.size() > 12 || str2.size() < 6)
				flag = 0;
			if (ans1 + ans2 + ans3 < 2)
				flag = 0;
			if (flag)
				cout << str2 << endl;
			flag = 1;
			str2 = "";
		}
	}
}