View Compilation Error

0_0_28983312_1452.cpp: In function 'int main()':
0_0_28983312_1452.cpp:32:10: error: 'i' was not declared in this scope
     if(o[i]=='|') {
          ^
0_0_28983312_1452.cpp:39:22: error: 'j' was not declared in this scope
    ans+=dp[n][1]*(1<<j);
                      ^
0_0_28983312_1452.cpp: At global scope:
0_0_28983312_1452.cpp:43:1: error: expected declaration before '}' token
 }
 ^