View Compilation Error

0_0_21455525_21805.cpp:4:7: error: 'M' does not name a type
 const M=100010;
       ^
0_0_21455525_21805.cpp:5:6: error: 'M' was not declared in this scope
 LL a[M],ans[M];
      ^
0_0_21455525_21805.cpp:5:13: error: 'M' was not declared in this scope
 LL a[M],ans[M];
             ^
0_0_21455525_21805.cpp: In function 'int main()':
0_0_21455525_21805.cpp:16:27: error: 'a' was not declared in this scope
             scanf("%lld",&a[i]);
                           ^
0_0_21455525_21805.cpp:18:13: error: 'ans' was not declared in this scope
             ans[i]=ans[i-1]+a[i];
             ^
0_0_21455525_21805.cpp:30:16: error: 'ans' was not declared in this scope
             if(ans[i]%aver==0)
                ^