View Compilation Error

0_0_37947576_14717.cpp: In function 'int main()':
0_0_37947576_14717.cpp:71:9: error: 'ans' was not declared in this scope
   cout<<ans<<endl;
         ^
0_0_37947576_14717.cpp: At global scope:
0_0_37947576_14717.cpp:77:1: error: expected declaration before '}' token
 }
 ^