# coding: utf-8

ct = int(input().rstrip())

ans = 0
for i in range(ct):
    ans += int(input().rstrip())

print(ans)


# <?php
#     $ct = trim(fgets(STDIN));
    
#     $ans = 0;
#     for($i = 0; $i < $ct; $i++) {
#         $ans += trim(fgets(STDIN));
#     }

#     echo $ans;
# ?>