View Compilation Error

0_0_33178035_18150.cpp:5:13: error: expected initializer before 'ans'
 int n,m,a[N]ans;
             ^
0_0_33178035_18150.cpp: In function 'int main()':
0_0_33178035_18150.cpp:12:10: error: 'a' was not declared in this scope
   memset(a,0,sizeof(a)); 
          ^
0_0_33178035_18150.cpp:24:3: error: 'ans' was not declared in this scope
   ans=0x7FFFFFFF;
   ^