View Compilation Error

0_0_30324742_31361.cpp: In function 'int main()':
0_0_30324742_31361.cpp:92:17: error: 'ans' was not declared in this scope
         cout << ans << endl;
                 ^
0_0_30324742_31361.cpp: At global scope:
0_0_30324742_31361.cpp:95:5: error: expected unqualified-id before 'return'
     return 0;
     ^
0_0_30324742_31361.cpp:96:1: error: expected declaration before '}' token
 }
 ^