230802

# a, b, c = input().split()
# a = int(a)
# b = int(b)
# c = int(c)
#
# if a + b > c:
#     if a + b < c or a + c < b or b + c < a:
#         print('삼각형')
#     elif a == b and b == c and a == c:
#         print('정삼각형')
#     elif a - b == 0 or b - c == 0 or a - c == 0:
#         print('이등변삼각형')
#     elif a * a + b * b == c * c or c * c + b * b == a * a or a * a + c * c == b * b:
#         print('직각삼각형')
#     else:
#         print('삼각형')
# else:
#     print('삼각형아님')

# a, b, c = input().split()
# a = int(a)
# b = int(b)
# c = int(c)
#
# if a > b:
#     t = a
#     a = b
#     b = t
# if b > c:
#     t = b
#     b = c
#     c = t
#
# if a + b > c:
#     print('yes')
# else:
#     print('no')

# a, b, c, d = input().split()
# a = int(a)
# b = int(b)
# c = int(c)
# d = int(d)
# if a/b > c/d:
#     print('>')
# elif a/b == c/d:
#     print('=')
# else:
#     print('<')

# a, b = input().split()
# a = float(a)
# b = float(b)
# c = (a-100)*9/10
# d = (b-c)*100/c
# if d<=10:
#     print('정상')
# elif d>20:
#     print('비만')
# else:
#     print('과체중')

# a, b = input().split()
# a = float(a)
# b = float(b)
# if a<150:
#     c = a-100
# elif a>=160:
#     c = (a-100)*9/10
# else:
#     c = (a-150)/2+50
# d = (b-c)*100/c
# if d<=10:
#     print('정상')
# elif d>20:
#     print('비만')
# else:
#     print('과체중')

# a, b, c = input().split()
# a = int(a)
# b = int(b)
# c = int(c)
# if a<=170:
#     print('CRASH', a, sep = ' ')
# elif b<=170:
#     print('CRASH', b, sep=' ')
# elif c<=170:
#     print('CRASH', c, sep=' ')
# else:
#     print('PASS')

# a, b = input().split()
# a = int(a)
# b = int(b)
# for i in range(a, b + 1):
#     if i%2==1:
#         print(i, end=' ')

# a = input()
# a = int(a)
# sum = 0
# for i in range(1, a + 1):
#     if i%2==0:
#         sum = sum + i
# print(sum)

# data = input().split()
#
# for i in range(10):
#     data[i] = int(data[i])
#
#     if data[i]%5==0:
#         print(data[i])
#         break
#     else:
#         print('0')

# data = []
# print(type(data), data)
#
# data.append(10)
# data.append(20)
# data.append(30)
# print(type(data), data, len(data))
#
# data.pop()
# print(data)
# data.pop(0)
# print(data)
#
# data.append(40)
# data.append(50)
# data.append(60)
# print(data)
#
# # data.append("Hello")
# print(data)
#
# # data.append([10, 20, 30])
# print(data)
#
# data.extend([40, 50, 60])
# print(data)
#
# data.sort()
# print(data)
#
# data.sort(reverse=True)
# print(data)
#
# print(data.count(40))
#
# data = []
# for i in range(5):
#     v = [0] * 5
#     data.append(v)
#
# print(data)
#
# data[2][2] = 'v'
#
# for i in range(len(data)):
#     for j in range(len(data[i])):
#         print(data[i][j], end=' ')
#     print()

a = input()
a = int(a)
sum = 0

data = input().split()
for i in range(1, a + 1):
    sum = sum + data[i]
print(sum)