题解 | #密码验证合格程序#

#include <stdio.h>
#include <string.h>


int main(){

    char str[102];
    while(scanf("%s", str) != -1){
        int falg[5] = {0};
        int len = strlen(str);
        for(int i = 0; i < len; i++){
            if(str[i] >= '0' && str[i] <= '9')
                falg[0] = 1;
            else if(str[i] >= 'A' && str[i] <= 'Z')
                falg[1] = 1;
            else if(str[i] >= 'a' && str[i] <= 'z')
                falg[2] = 1;
            else if(str[i] >= '0' && str[i] <= '9')
                falg[3] = 1;
            else 
                falg[4] = 1;
        }
        
        int fl = 0;
        for(int i = 0; i < len - 2; i++){
            for(int j = i + 1; j < len; j++){
                if(str[i] == str[j] && str[i + 1] == str[j+1] && str[i + 2] == str[j + 2]){
                    fl = 1;
                    break;
                }
            }
            if(fl == 1)
                break;
        }

        int sun = falg[0] + falg[1] + falg[2] + falg[3] +falg[4];
        if(sun >= 3 && fl == 0 && len > 8)
            printf("OK\n");
        else
            printf("NG\n");

    }

    

    return 0;
}