提交记录 #149

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

const char* check_password_safety(const char *password) {
    int length = strlen(password);
    
    if (length < 6) {
        return "Not Safe";
    }
    
    int has_digit = 0;
    int has_lower = 0;
    int has_upper = 0;
    int has_special = 0;
    
    for (int i = 0; i < length; ++i) {
        if (isdigit(password[i])) {
            has_digit = 1;
        } else if (islower(password[i])) {
            has_lower = 1;
        } else if (isupper(password[i])) {
            has_upper = 1;
        } else {
            has_special = 1;
        }
    }
    
    int types_count = has_digit + has_lower + has_upper + has_special;
    
    if (types_count == 1) {
        return "Not Safe";
    } else if (types_count == 2) {
        return "Medium Safe";
    } else {
        return "Safe";
    }
}

int main() {
    int N;
    scanf("%d", &N);
    getchar(); // 清除换行符

    for (int i = 0; i < N; i++) {
        char password[21]; // 最多20个字符 + 1个结束符
        fgets(password, sizeof(password), stdin);
        
        // 去除换行符
        password[strcspn(password, "\n")] = 0;
        
        const char* safety = check_password_safety(password);
        printf("%s\n", safety);
    }
    
    return 0;
}