HJ20 密码验证合格程序

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

string cheak(string &tmp)
{
    
    
    int flag[4] = {
    
    0,0,0,0};
    if(tmp.size() <= 8) return "NG";
    for(int i=0 ; i <tmp.size() ; i++)
    {
    
    
        if(tmp[i] >= 'A' && tmp[i] <= 'Z') flag[0] = 1;
        else if(tmp[i] >= 'a' && tmp[i] <= 'z') flag[1] = 1;
        else if(tmp[i] >= '0' && tmp[i] <= '9') flag[2] = 1;
        else flag[3] = 1;
    }
    int count = 0;
    for(int i=0 ; i<4 ; i++)
        if(flag[i] == 1) count++;
    if(count < 3) return "NG";
    
    for(int i=0 ; i<tmp.size() ; i++)
    {
    
    
        for(int j=i+3 ; j<tmp.size() ; j++)
        {
    
    
            if(tmp[i] == tmp[j] && tmp[i+1] == tmp[j+1] && tmp[i+2] == tmp[j+2])
                return "NG";
        }
    }

    return "OK";
}

int main() {
    
    
    string tmp;
    while (cin >> tmp )
    {
    
    
        cout << cheak(tmp) << endl;
    }
}
// 64 位输出请用 printf("%lld")