View Compilation Error

0_0_22227597_27319.cpp: In function 'int main()':
0_0_22227597_27319.cpp:36:20: error: expected primary-expression before ';' token
          int cnt = ;
                    ^
0_0_22227597_27319.cpp:37:21: error: expected primary-expression before ';' token
          for(int i= ; i<n ; i++){
                     ^
0_0_22227597_27319.cpp:38:37: error: expected primary-expression before ']' token
              if(_hash[i] == _hash[i-]){
                                     ^
0_0_22227597_27319.cpp:44:24: error: expected primary-expression before ';' token
                  cnt = ;
                        ^