题解 | #密码验证合格程序#

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

bool isOk(string str) {
    if (str.size() <= 8) return false;
    int xiaoxie = 0, daxie = 0, shuzi = 0, qita = 0;
    set<string> _set;
    for (int i = 0; i < str.size() - 2; i++) {
        if (str[i] >= '0' && str[i] <= '9') shuzi = 1;
        else if (str[i] >= 'a' && str[i] <= 'z') xiaoxie = 1;
        else if (str[i] >= 'A' && str[i] <= 'Z') daxie = 1;
        else qita = 1;
        if (_set.find(str.substr(i, 3)) == _set.end()) {
            _set.insert(str.substr(i, 3));
        } else {
            return false;
        }
    }
    for (int i = str.size() - 2; i < str.size(); i++) {
        if (str[i] >= '0' && str[i] <= '9') shuzi = 1;
        else if (str[i] >= 'a' && str[i] <= 'z') xiaoxie = 1;
        else if (str[i] >= 'A' && str[i] <= 'Z') daxie = 1;
        else qita = 1;
    }
    if ((xiaoxie + daxie + shuzi + qita) < 3) return false;
    return true;
}

int main() {
    vector<string> inp;
    string temp;
    while(cin >> temp) {
        inp.push_back(temp);
    }
    for (auto str : inp) {
        if (isOk(str))
            cout << "OK" << endl;
        else 
            cout << "NG" << endl;
    }

}
// 64 位输出请用 printf("%lld")

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