参考答案（个人编写）

A

a, b = map(int, input().split( ))
c = int(input())
print(c - a + b)

B

a = float(input())
print("%.2lf" %(a * 9 / 5 + 32))

C

a = float(input())
if a > 3:
    a = int(a)
    print(((a + 1 - 3) * 2 + 10))
else:
    print(10)

D

a = input()
b = list(a)
b.sort(reverse=True)
ans = int(''.join(b))
print(ans)

E

a, b, c = input().split()
a = int(a)
b = int(b)
c = str(c)
if c == '+':
    print(a + b)
elif c == '-':
    print(a - b)
elif c == '*':
    print(a * b)
elif c == '//':
    if b == 0:
        print("Error")
    else:
        print(a // b)
elif c == '%':
    print(a % b)
else:
    print("Error")

F

a = str(input())
b = a[0]
if b == 'A':
    print('Hangzhou')
elif b == 'B':
    print('Ningbo')
elif b == 'C':
    print('Wenzhou')
elif b == 'E':
    print('Huzhou')
elif b == 'F':
    print('Jiaxing')
elif b == 'G':
    print('Jinhua')
elif b == 'H':
    print('Quzhou')
elif b == 'I':
    print('Taizhou')
elif b == 'J':
    print('Taizhou')
elif b == 'K':
    print('Zhoushan')
elif b == 'L':
    print('Lishui')
else:
    print('Input error')

G

a = list(input())
b = len(a) // 2 + len(a) % 2
c = a[:b]
d = a[b - len(a) % 2:len(a)]
d.reverse()
# print(b, c, d)
print("Yes" if c == d else "No")

H

a,b,c=input().split()
a=int(a)
b=int(b)
c=int(c)
a%=b
p=0
ans=""
n=a
while(p<c):
    n%=b
    n*=10
    ans+=str(n//b)
    p+=1

print(ans)

I

a = list(map(float, (input().split(','))))
ssum = sum(a)
a.sort()
print("%.2lf %.2lf"%(ssum / len(a), a[0]))

J

print(__import__('datetime').datetime.strptime(input(),'%Y-%m-%d').timetuple().tm_yday)

K

def is_perfect_number(n):
    m = 1
    for i in range(2, int(n ** 0.5) + 1):
        if n % i == 0:
            m += i + n // i
    return m == n
n = int(input())
for n in range(2, n+1):
    if is_perfect_number(n):
        print(n)

L

n = int(input())
for i in range(1, n+1):
    b = ""
    for j in range(1, i+1):
        b += str(j)
    for j in range(i-1, 0, -1):
        b += str(j)
    print(" " * (n-i) + b)

M

n = int(input())
is_prime = [True] * (n+1)
is_prime[0] = is_prime[1] = False
for i in range(2, n+1):
    if is_prime[i]:
        for j in range(i*i, n+1, i):
            is_prime[j] = False
ans = sum(1 for x in is_prime if x)
print(ans)

N

a, n = map(int, input().split())
b = 0
for i in range(1, n + 1):
    b = b + int(str(a)*i)
print(b)

O

m = int(input())
for i in range(m):
    s = input()
    sum = 0
    if any(c.isupper() for c in s):
        sum += 1
    if any(c.islower() for c in s):
        sum += 1
    if any(c.isdigit() for c in s):
        sum += 1
    if any(c in ['~', '!', '@', '#', '$', '%', '^'] for c in s):
        sum += 1
    if len(s) >= 8 and len(s) <= 16 and sum >= 3:
        print('YES')
    else:
        print('NO')