/in/foo.cc: In function 'int main()':
/in/foo.cc:9:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int i=3;i<=n;i++)
     ^~~
/in/foo.cc:11:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  cout<<f[n]%7654321;
  ^~~~