View Compilation Error

0_0_33776737_22318.cpp: In function 'int main()':
0_0_33776737_22318.cpp:122:24: error: 'ans' was not declared in this scope
         printf("%d\n", ans);
                        ^
0_0_33776737_22318.cpp: At global scope:
0_0_33776737_22318.cpp:124:5: error: expected unqualified-id before 'return'
     return 0;
     ^
0_0_33776737_22318.cpp:125:1: error: expected declaration before '}' token
 }
 ^