OJ答案

为造福同学将OJ中Python课程答案公布于此
OJ网址：https://oj.nsfz.net

章节1：输入、输出及赋值#

1120 nsfz欢迎你#

1
print('nsfz')
2
print('欢迎你')

1381 你的名字#

1
name = input()
2
print('你好', name)

1119 A+B问题#

1
a = int(input())
2
b = int(input())
3
print(a + b)

章节2：顺序结构#

1003 混合运算#

1
a, b=map(int, input().split())
2
print((a + b) * (a - b))

1001 求一个数的立方#

1
a = int(input())
2
print(a ** 3)

1008 求长方形面积和周长#

1
a, b = map(int, input().split())
2
print(a * b, (a + b) * 2)

1122 计算线段长度#

1
x1, y1 = map(int, input().split())
2
x2, y2 = map(int, input().split())
3
distance = ((x1 - x2) ** 2 + (y1 - y2) ** 2) ** 0.5
4
print('%.3f'%distance)

254 细菌繁殖#

1
a = int(input())
2
print(10 * (2 ** (a - 1)))

1007 求商和余数#

1
a, b = map(int, input().split())
2
print(a // b, a % b, end=' ')
3
print('%.1f'%(a / b))

1133 分离数位#

1
x = int(input())
2
a = x // 100
3
b = x // 10 % 10
4
c = x % 10
5
print(a, b, c)

255 鸡兔同笼#

1
a = int(input())
2
b = int(input())
3
print(2*a-b//2, b//2-a)

256 分糖果#

1
a = list(map(int, input().split()))
2

3
for i in range(5):
4
    a[(i + 4) % 5] += a[i] // 3
5
    a[(i + 1) % 5] += a[i] // 3
6
    a[i] //= 3
7

8
print(a[0], a[1], a[2], a[3], a[4])

257 是0？是1？#

1
a, b, c = map(int, input().split())
2
condition = a % 2 == 1 and b % 2 == 1 and c % 2 == 1
3
print(int(condition))

章节3：关系、逻辑运算与选择语句#

1012 判断奇偶数#

1
x = int(input())
2

3
if x % 2 == 0:
4
    print('是')
5
else:
6
    print('不是')

1014 两数比大小#

1
a, b = map(int, input().split())
2

3
if a > b:
4
    print(a)
5
else:
6
    print(b)

1018 恐龙园买门票#

1
h = float(input())
2

3
if h < 1.3:
4
    print(60)
5
else:
6
    print(120)

1130 心系南方灾区#

1
from math import ceil
2
a,b = map(int, input().split())
3
print(ceil(a/b))

1013 判断闰年#

1
a = int(input())
2

3
if a % 400 == 0 or (a % 4 == 0 and a % 100 != 0):
4
    print('RUN!')
5
else:
6
    print('NO RUN!')

267 左邻右舍#

1
n, x = map(int, input().split())
2

3
a, b = x - 1, x + 1
4
if a == 0:
5
    a = n
6
if b == n + 1:
7
    b = 1
8
print(min(a, b), max(a, b))

1366 出租车计费#

1
w = float(input())
2

3
if w <= 3:
4
    print('8.0')
5
elif w <= 10:
6
    print('%.1f'%(8+(w-3)*1.8))
7
else:
8
    print('%.1f'%(8+7*1.8+(w-10)*2.4))

1010 三个数的大小关系#

1
a, b, c = map(int, input().split())
2

3
if a < b < c:
4
    print('Yes')
5
else:
6
    print('No')

1370 BMI指数#

1
a, b = map(float, input().split())
2

3
x = b / (a * a)
4
if x <= 18.4:
5
    print('偏瘦')
6
elif x <= 23.9:
7
    print('正常')
8
elif x <= 27.9:
9
    print('过重')
10
else:
11
    print('肥胖')

272 加油卡充值#

1
n = int(input())
2

3
if n >= 5000:
4
    print('%.2f'%(n+n*0.05))
5
elif n >= 3000:
6
    print('%.2f'%(n+n*0.04))
7
elif n >= 1000:
8
    print('%.2f'%(n+n*0.03))
9
else:
10
    print('%.2f'%n)

266 **解方程#

1
a, b, c = map(int, input().split())
2

3
if a == 0:
4
    if b == 0:
5
        if c == 0:
6
            print('任意实数')
7
        else:
8
            print('无解')
9
    else:
10
        print('%.1f'%(-c / b))
11
else:
12
    delta = b * b - 4 * a * c
13
    if delta > 0:
14
        print('%.1f'%((-b-delta**0.5)/2/a), end=' ')
15
        print('%.1f'%((-b+delta**0.5)/2/a))
16
    elif delta == 0:
17
        print('%.1f'%(-b/2/a))
18
    else:
19
        print('无解')

ss13 **统计每月天数#

1
l1 = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
2
l2 = [0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
3

4
a, b = map(int, input().split())
5
if a % 400 == 0 or a % 4 == 0 and a % 100 != 0:
6
    print(l2[b])
7
else:
8
    print(l1[b])

章节4：循环语句for#

1436 输出多行******#

1
n = int(input())
2
for i in range(n):
3
    print('******')

1437 输出n个自然数#

1
n = int(input())
2
for i in range(1, n + 1):
3
    print(i, end=' ')

1020 求解1+2+3+…+n#

1
n = int(input())
2
print(n * (n + 1) // 2)

1021 求1+3+5+…+n#

1
n = int(input())
2
print((1 + n) * ((n - 1) // 2 + 1) // 2)

1022 求2+4+6+…+n#

1
n = int(input())
2
print((2 + n) * ((n - 2) // 2 + 1) // 2)

1023 求1+1/2+1/3+…+1/n#

1
n = int(input())
2
ans = 0.0
3
for i in range(1, n + 1):
4
    ans += 1 / i
5
print('%.3f'%ans)

1025 求11+22+…+n*n#

1
n = int(input())
2
ans = 0
3
for i in range(1, n + 1):
4
    ans += i ** 2
5
print(ans)

1124 分别求奇数和偶数和#

1
n = int(input())
2
ans1, ans2 = 0, 0
3
for i in range(n):
4
    t = int(input())
5
    if t % 2 == 0:
6
        ans2 += t
7
    else:
8
        ans1 += t;
9
print(ans1)
10
print(ans2)

1382 求约数和#

1
n = int(input())
2
ans = 0
3
for i in range(1, n + 1):
4
    if n % i == 0:
5
        ans += i
6
print(ans)

1026 求n!#

1
n = int(input())
2
ans = 1
3
for i in range(1, n + 1):
4
    ans *= i
5
print(ans)

1131 **判奇偶求和#

1
n = int(input())
2
ans = 0
3
if n % 2 == 1:
4
    for i in range(1, n + 1):
5
        if i % 2 == 0:
6
            ans += i
7
else:
8
    for i in range(1, n + 1):
9
        if n % i == 0:
10
            ans += i
11
print(ans)

1027 **求1!+2!+…+n!#

1
def factorial(n: int):
2
    ans = 1;
3
    for i in range(1, n + 1):
4
        ans *= i
5
    return ans
6

7
n = int(input())
8
ans = 0
9
for i in range(1, n + 1):
10
    ans += factorial(i)
11
print(ans)

273 **住宿费#

1
n = int(input())
2
if n % 4 == 1:
3
    print((n // 4 - 2)* 140 + 3 * 120)
4
elif n % 4 == 2:
5
    print((n // 4 - 1) * 140 + 2 * 120)
6
elif n % 4 == 3:
7
    print((n // 4) * 140 + 120)
8
else:
9
    print(n // 4 * 140)

章节5：循环语句while#

1442 理财#

1
n = 1.0
2
t = 0
3
while True:
4
    n *= 1.035
5
    t += 1
6
    if n >= 2:
7
        print(t)
8
        break

1443 折纸的厚度#

1
i = 1
2
while 0.00008 * (2 ** i) <= 8844.43:
3
    i += 1
4
print(i)

1126 求1+1/2+1/3+…+1/n>X的n最小值#

1
n = int(input())
2
s = 0
3
for i in range(1, 100000000):
4
    s += 1 / i
5
    if s > n:
6
        print(i)
7
        break

1132 至少多少#

1
n = int(input())
2
s = 0
3
for i in range(1, 10000000):
4
    s += i * 2 - 1
5
    if s >= n:
6
        print(i)
7
        break

1125 角谷猜想#

1
n = int(input())
2
step = 0
3
while n != 1:
4
    if n % 2 == 0:
5
        n //= 2
6
    else:
7
        n = n * 3 + 1
8
    step += 1
9
print(step)

1444 统计整数个数#

1
ans = 0
2
while True:
3
    n = int(input())
4
    if n == 0:
5
        break
6
    ans += 1
7
print(ans)

1367 根据AQI值判断城市的空气质量#

1
while True:
2
    n = int(input())
3
    if n == -1:
4
        exit(0)
5
    if n <= 100:
6
        print('优良')
7
    else:
8
        print('污染')

1439 辗转相除法求最大公约数#

1
import math
2
a, b = map(int, input().split())
3
print(math.gcd(a, b))

1445 求最大公约数#

1
from math import gcd
2

3
a, b, c = map(int, input().split())
4

5
print(gcd(gcd(a, b), c))

1445 求最大公约数#

1
import math
2
a , b = map(int, input().split())
3
print(a * b // math.gcd(a, b))

1369 **猜数游戏#

此题无法提交不用写

章节6：列表list#

1052 排序输出#

1
l = []
2
while True:
3
    s = input()
4
    if int(s) == -1:
5
        break
6
    l.append(int(s))
7

8
l.sort()
9

10
for i in l:
11
    print(i)
12
exit(0)

1435 评委评分#

1
n = int(input())
2
l = []
3
for i in range(n):
4
    l.append(int(input()))
5

6
l.sort()
7

8
print(sum(l[1:-1]) / (n - 2))

282 统计数字个数#

1
s = input()
2

3
l = [0 for i in range(10)]
4

5
for c in s:
6
    l[ord(c) - ord('0')] += 1
7

8
print(' '.join(map(str, l)))

1051 求平均年龄#

1
l = []
2
while (n := int(input())) != 0:
3
    l.append(n)
4

5
print('%.2f'%(sum(l) / len(l)))

1438 求平均身高#

1
n = int(input())
2
l = []
3
for i in range(n):
4
    l.append(float(input()))
5

6
print('%.2f'%(sum(l) / len(l)))

1050 寻找数m#

1
l = map(int, input().split())
2
m = int(input())
3
ans = 0
4
for i in l:
5
    if i == m:
6
        ans += 1
7
print(ans)

章节7：自定义函数#

1446 组合数#

1
def fac(n):
2
    s = 1
3
    for i in range(1, n + 1):
4
        s *= i
5
    return s
6
n, m = map(int, input().split())
7
print(fac(n) // fac(m) // fac(n - m))

1112 绝对素数#

1
def is_prime(n: int):
2
    i = 2
3
    while i ** 2 <= n:
4
        if n % i == 0:
5
            return False
6
        i += 1
7
    return True
8

9
for i in range(11, 100):
10
    if is_prime(i) and is_prime(int(''.join(reversed(str(i))))):
11
        print(i)

1129 求三角形周长#

1
def dist(x1, y1, x2, y2):
2
    return ((x1 - x2) ** 2 + (y1 - y2) ** 2) ** 0.5
3

4
x1, y1, x2, y2, x3, y3 = map(int, input().split())
5

6
ans = dist(x1, y1, x2, y2) + dist(x1, y1, x3, y3) + dist(x2, y2, x3, y3)
7

8
print('%.2f' % ans)

1118 姐妹数对#

1
def cond(x, y):
2
    return (x + y) % 3 == 0 or (x + y) % 7 == 0
3

4
n = int(input())
5

6
ans = 0
7

8
for i in range(1, n + 1):
9
    for j in range(i + 1, n + 1):
10
        if cond(i, j):
11
            ans += 1
12

13
print(ans)

章节8：算法基础#

1363 递归法求斐波拉契数列第n项的值#

1
def f(n):
2
    if n == 1 or n == 2:
3
        return 1
4
    return f(n - 1) + f(n - 2)
5
n = int(input())
6
print(f(n))

1447 递归求n!#

1
import math
2
n =  int(input())
3
print(math.factorial(n))

1448 递归法实现辗转相除算法#

1
import math
2
a, b = map(int, input().split())
3
print(math.gcd(a, b))

1028 枚举法求水仙花数#

1
m, n = map(int, input().split())
2
f = True
3
for i in range(m, n + 1):
4
    if i == sum(map(lambda x: (ord(x) - ord('0')) ** 3, str(i))):
5
        print(i, end=' ')
6
        f = False
7
if f:
8
    print('no')

1031 枚举法求完美数#

1
def get_divisors_sum(n):
2
    s = 0
3
    for i in range(1, int(n ** 0.5) + 1):
4
        if n % i == 0:
5
            s += i
6
            if i * i != n and i != 1:
7
                s += n // i
8
    return s
9

10
m, n = map(int, input().split())
11

12
for i in range(m, n + 1):
13
    if i == get_divisors_sum(i):
14
        print(i, end=' ')

1362 递推法求斐波拉契数列第n项的值#

1
n = int(input())
2
a, b = 1, 1
3
if n <= 2:
4
    print(1)
5
    exit(0)
6
for i in range(n - 2):
7
    a, b = b, a + b
8
print(b)

1101 汉诺塔#

1
n = int(input())
2

3
def get_other(a, b):
4
    l = ['A', 'B', 'C']
5
    l.remove(a)
6
    l.remove(b)
7
    return l[0]
8

9
def move(n: int, src: str, dest: str):
10
    if n == 1:
11
        print(f'{src} To {dest}')
12
        return
13
    move(n - 1, src, get_other(src, dest))
14
    print(f'{src} To {dest}')
15
    move(n - 1, get_other(src, dest), dest)
16

17
move(n, 'A', 'C')

1440 二分查找#

1
n = int(input())
2

3
l, r = 1, 1000
4

5
cnt = 0
6

7
while l < r and l != r - 1:
8
    m = (l + r) // 2
9
    cnt += 1
10
    if n > m:
11
        l = m
12
    elif n < m:
13
        r = m
14
    else:
15
        break
16

17
print(cnt)

音乐

音乐

章节1：输入、输出及赋值#

1120 nsfz欢迎你#

1381 你的名字#

1119 A+B问题#

章节2：顺序结构#

1003 混合运算#

1001 求一个数的立方#

1008 求长方形面积和周长#

1122 计算线段长度#

254 细菌繁殖#

1007 求商和余数#

1133 分离数位#

255 鸡兔同笼#

256 分糖果#

257 是0？是1？#

章节3：关系、逻辑运算与选择语句#

1012 判断奇偶数#

1014 两数比大小#

1018 恐龙园买门票#

1130 心系南方灾区#

1013 判断闰年#

267 左邻右舍#

1366 出租车计费#

1010 三个数的大小关系#

1370 BMI指数#

272 加油卡充值#

266 **解方程#

ss13 **统计每月天数#

章节4：循环语句for#

1436 输出多行******#

1437 输出n个自然数#

1020 求解1+2+3+…+n#

1021 求1+3+5+…+n#

1022 求2+4+6+…+n#

1023 求1+1/2+1/3+…+1/n#

1025 求1*1+2*2+…+n*n#

1124 分别求奇数和偶数和#

1382 求约数和#

1026 求n!#

1131 **判奇偶求和#

1027 **求1!+2!+…+n!#

273 **住宿费#

章节5：循环语句while#

1442 理财#

1443 折纸的厚度#

1126 求1+1/2+1/3+…+1/n>X的n最小值#

1132 至少多少#

1125 角谷猜想#

1444 统计整数个数#

1367 根据AQI值判断城市的空气质量#

1439 辗转相除法求最大公约数#

1445 求最大公约数#

1445 求最大公约数#

1369 **猜数游戏#

章节6：列表list#

1052 排序输出#

1435 评委评分#

282 统计数字个数#

1051 求平均年龄#

1438 求平均身高#

1050 寻找数m#

章节7：自定义函数#

1446 组合数#

1112 绝对素数#

1129 求三角形周长#

1118 姐妹数对#

章节8：算法基础#

1363 递归法求斐波拉契数列第n项的值#

1447 递归求n!#

1448 递归法实现辗转相除算法#

1028 枚举法求水仙花数#

1031 枚举法求完美数#

1362 递推法求斐波拉契数列第n项的值#

1101 汉诺塔#

1440 二分查找#

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1025 求11+22+…+n*n#