foo.cc: In function 'int main()':
foo.cc:16:32: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   16 |                         if(a[j]<a);
      |                            ~~~~^~
foo.cc:16:25: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   16 |                         if(a[j]<a);
      |                         ^~
foo.cc:17:33: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   17 |                                 ok=0;cnt++;
      |                                 ^~
foo.cc:19:17: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   19 |                 if(ok==1);
      |                 ^~
foo.cc:20:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   20 |                 {
      |                 ^
foo.cc:5:24: warning: unused variable 'k' [-Wunused-variable]
    5 |         int n,a[20000],k,cnt;
      |                        ^

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