Submission #1769101

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Source Code Expand

def b_price(N, X, A):
    ans = 0
    for i in range(N):
        k = 1 << i
        if X & k == k: #Xを2進数表記したとき、b_kが1か(b_0が最下位ビット)
            ans += A[i]
    return ans
  
N,X = [int(_) for _ in input().split()]
A = [int(_) for _ in input().split()]
print(b_price(N, X, A))

Submission Info

Judge Result