CCF模拟题——跳一跳

// An highlighted block
steps=list(map(int,input().split()))
n=len(steps)

scores=[]
for i in steps:
    scores.append(i)

for i in range(n):
    if i>0 and steps[i] == 2 and steps[i-1] == 2:
       scores[i]=scores[i-1]+2

score=0
for i in scores:
    score+=i
print(score)