题解 | 密码强度等级

string = input().strip()
score = 0

# ===================== 长度得分 =====================
n = len(string)
if n <= 4:
    score += 5
elif 5 <= n <= 7:
    score += 10
elif n >= 8:
    score += 25

# print("长度得分:", score)  # 调试

# ===================== 字母统计与得分 =====================
upper_count = 0
lower_count = 0

for char in string:
    if char.isupper():
        upper_count += 1
    elif char.islower():
        lower_count += 1

letter_count = upper_count + lower_count

if letter_count == 0:
    pass
elif upper_count == 0 or lower_count == 0:
    score += 10
else:
    score += 20

# print("字母统计:", upper_count, lower_count)  # 调试
# print("字母得分后:", score)  # 调试

# ===================== 数字统计与得分 =====================
num_count = 0
for char in string:
    if char.isdigit():
        num_count += 1

if num_count == 0:
    pass
elif num_count == 1:
    score += 10
else:
    score += 20

# print("数字个数:", num_count)  # 调试
# print("数字得分后:", score)  # 调试

# ===================== 符号统计与得分 =====================
symbol_count = 0
for char in string:
    if not (char.isalpha() or char.isdigit()):
        symbol_count += 1

if symbol_count == 0:
    pass
elif symbol_count == 1:
    score += 10
else:
    score += 25

# print("符号个数:", symbol_count)  # 调试
# print("符号得分后:", score)  # 调试

# ===================== 组合奖励（优先级从高到低） =====================
if lower_count > 0 and upper_count > 0 and num_count > 0 and symbol_count > 0:
    score += 5
elif letter_count > 0 and num_count > 0 and symbol_count > 0:
    score += 3
elif letter_count > 0 and num_count > 0 and symbol_count == 0:
    score += 2

# print("奖励加分后总分:", score)  # 调试

# ===================== 最终等级输出 =====================
if score >= 90:
    print("VERY_SECURE")
elif score >= 80:
    print("SECURE")
elif score >= 70:
    print("VERY_STRONG")
elif score >= 60:
    print("STRONG")
elif score >= 50:
    print("AVERAGE")
elif score >= 25:
    print("WEAK")
else:
    print("VERY_WEAK")