AtCoder Beginners SelectionをPythonで実装してみた。

目的

本記事は、自身のAtCoderで実装能力を可視化するために備忘録として残していくためのものなのであしからず。初心者なので実装が拙いのはご容赦ください。

模範解答

Product

# -*- coding: utf-8 -*-
a,b = map(int,input().split())

if (a*b)%2 ==0:
  print("Even")
elif (a*b)%2 == 1:
  print("Odd")

Placing Marbles

s = input()
print(sum([int(i) for i in s]))

Shift only

N = int(input())
a = list(map(int,input().split()))

def counter(i):
    c_ = 0
    while i%2 == 0:
        i  = i//2
        c_ = c_ +1
    return c_

c = [counter(a[i]) for i in range(N)]
count = min(c)
print(count)

Coins

A = int(input())
B = int(input())
C = int(input())
X = int(input())

counter = 0
for ia in range(A+1):
    for ib in range(B+1):
        for ic in range(C+1):
            x = 500*ia + 100*ib + 50*ic
            if X == x:
                counter = counter + 1

print(counter)

Some Sums

N,A,B = map(int,input().split())

number = []

for i in range(N):
    n = i+1
    n_ = sum([int(i) for i in str(n)])
    if n_ >= A and B>=n_:
        number.append(n)

print(sum(number))

Card Game for Two

N = int(input())
a = list(map(int,input().split()))

alice_selct = []
bob_selct = []

def Alice_selector(a,alice_selct):
    i = max(a)
    a.remove(i)
    alice_selct.append(i)
    return a,alice_selct

def Bob_selector(a,bob_selct):
    i = max(a)
    a.remove(i)
    bob_selct.append(i)
    return a,bob_selct

for i in range(N):
    if len(a) != 0:
        a,alice_selct = Alice_selector(a,alice_selct)
    else:
        break
    if len(a) != 0:
        a,bob_selct = Bob_selector(a,bob_selct)
    else:
        break
    
print(sum(alice_selct)-sum(bob_selct))

Kagami Mochi

N = int(input())
d = []
for i in range(N):
    d.append(int(input()))
print(len(set(d)))

Otoshidama

N,Y = map(int,input().split())

status = 0
for ix in range(N+1):
    for iy in range(N+1-ix):
        iz= N - ix - iy
        y = 10000*ix + 5000*iy + 1000*iz
        if y == Y:
            status = 1
            
        if status == 1:
            break
    if status == 1:
        break
        
if status == 0:
    print("-1 -1 -1")
else:
    print(ix,iy,iz)

白昼夢

S = input()


S=S.replace("eraser","")
S=S.replace("erase","")
S=S.replace("dreamer","")
S=S.replace("dream","")

if len(S) == 0:
    print("YES")
else:
    print("NO")