/in/foo.cc: In function 'int main()':
/in/foo.cc:17:31: warning: statement has no effect [-Wunused-value]
   17 |                         a[j+1]==j;
      |                         ~~~~~~^~~
/in/foo.cc:13:27: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
   13 |                         if(x%j==0)
      |                           ^
/in/foo.cc:25:15: warning: 'm' may be used uninitialized [-Wmaybe-uninitialized]
   25 |         cout<<m;
      |               ^
/in/foo.cc:6:17: note: 'm' was declared here
    6 |         int n,x,m;
      |                 ^