#!/bin/python

import sys

def longestSequence(a):
    seq=0
    for i in a:
        if i==1:
            seq+=1
            print seq
        elif i%2==0:
            seq+=(i/2)+i+1
        else:
            seq+=i+1
    return seq

if __name__ == "__main__":
    n = int(raw_input().strip())
    a = map(long, raw_input().strip().split(' '))
    result = longestSequence(a)
    print result