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

Q=[]
ANS=0

for i in range(N):
    #print(Q,ANS)
    a=A[i]
    if i%2==0:
        while True:
            if Q:
                x,y=Q[-1]

                if a>=y:
                    Q.pop()
                    ANS-=y-x+1
                    continue

                if a<x:
                    Q.append((1,a))
                    ANS+=a

                elif x<=a<=y:
                    MAX=max(a,y)
                    Q.pop()
                    ANS-=y-x+1
                    ANS+=MAX
                    Q.append((1,MAX))

                break
            else:
                Q.append((1,a))
                ANS+=a
                break

    else:
        while True:
            if Q:
                x,y=Q[-1]

                if a>y:
                    Q.pop()
                    ANS-=y-x+1
                    continue

                if a<x:
                    break

                elif x<=a<=y:
                    MAX=max(a,x)
                    ANS-=MAX-x+1
                    Q.pop()

                    if MAX<y:
                        Q.append((MAX+1,y))

                break
            else:
                break

    print(ANS)