ABC140 C - Maximal Value を解いた

問題文の通りに書いてみた

MaximalValue.py

N = int(input())
A = [0]*N
B = list(map(int,input().split()))
 
for i in range(N-2,-1,-1):
    if i == N-2:
        A[i],A[i+1] = B[i],B[i]
    else:
        A[i] = B[i]
        if B[i] <= A[i+1]:
            A[i+1] = B[i]
print(sum(A))