View Compilation Error

0_0_22219214_1331.cpp: In function 'bool dance()':
0_0_22219214_1331.cpp:83:22: error: 'i' was not declared in this scope
         O[cnt++] = X[i];  // 暴搜选择哪行，并删除那行?的列
                      ^
0_0_22219214_1331.cpp: At global scope:
0_0_22219214_1331.cpp:89:11: error: expected constructor, destructor, or type conversion before '(' token
     resume(id);
           ^
0_0_22219214_1331.cpp:90:5: error: expected unqualified-id before 'return'
     return false;
     ^
0_0_22219214_1331.cpp:91:1: error: expected declaration before '}' token
 }
 ^