View Compilation Error

0_0_22019521_13115.cpp: In function 'int main()':
0_0_22019521_13115.cpp:88:25: error: 'ss' was not declared in this scope
         up = n << 1 | 1;ss
                         ^
0_0_22019521_13115.cpp:89:33: error: expected ';' before ')' token
         for (i = 1; i <= n; i ++) scanf("%d", d + i);
                                 ^