import sys
def main():
    text1 = sys.stdin.readline()
    text2 = sys.stdin.readline()
    
    num = int(text1)
    arr_data = text2.split(" ")
    
    total = 0
    for i in arr_data:
        total += int(i)
    
    print(total)

if __name__ == "__main__":
    main()