foo.cc: In function 'int main()':
foo.cc:33:33: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   33 |                 for(int i = 1;i = 10;i++)
      |                               ~~^~~~
foo.cc:31:21: warning: unused variable 'ans' [-Wunused-variable]
   31 |                 int ans = 0;
      |                     ^~~
foo.cc:32:20: warning: unused variable 'x' [-Wunused-variable]
   32 |                 ll x = n;
      |                    ^

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