题解 | #密码验证合格程序#

#include <iostream>
#include <string>
using namespace std;

int main() {
    int a = 0, b = 0, c = 0, d = 0;

    string inp;
    cin >> inp;

    if (inp.length() <= 8) {
        cout << "NG" << endl;
        return 0;
    }

    for (char c : inp) {
        if (c <= 'Z' && c >= 'A') a++;
        else if (c <= 'z' && c >= 'a') b++;
        else if (c <= '9' && c >= '0') c++;
        else d++;
    }

    if (a+b+c+d < 3)  {
        cout << "NG" << endl;
        return 0;
    }

    for (int i=0;i<inp.length()-3;i++) {
        string subs = inp.substr(i, 3);
        if (inp.find(subs.c_str(), i+3) != string::npos) {
              cout << "NG" << endl;
              return 0;
        }
    }

    cout << "OK" << endl;
    return 0;
}
// 64 位输出请用 printf("%lld")