/in/foo.cc: In function 'int main()':
/in/foo.cc:20:16: error: expected unqualified-id before ',' token
  long long n,m,,ans=0,l,r,temp,M=1;
                ^
/in/foo.cc:28:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(i=0;i<n;i++)
  ^~~
/in/foo.cc:44:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   cout<<ans%M;
   ^~~~