foo.cc: In function 'int main()':
foo.cc:12:17: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   12 |                 if((b==0&&a!=0)||a[j]%b[j]!=0)
      |                 ^~
foo.cc:14:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   14 |                         break;
      |                         ^~~~~
foo.cc:15:17: error: 'else' without a previous 'if'
   15 |                 else
      |                 ^~~~
foo.cc:6:22: warning: unused variable 'cnt' [-Wunused-variable]
    6 |         unsigned int cnt=0;
      |                      ^~~

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