/in/foo.cc: In function 'int main()':
/in/foo.cc:10:25: warning: iteration 9 invokes undefined behavior [-Waggressive-loop-optimizations]
   10 |                 if(x<a[j]){
      |                      ~~~^
/in/foo.cc:9:22: note: within this loop
    9 |         for(int j=1;j<=10;j++){
      |                     ~^~~~