/in/foo.cc: In function 'int main()':
/in/foo.cc:12:31: warning: 'b' may be used uninitialized [-Wmaybe-uninitialized]
   12 |                         a=sqrt(m-b);
      |                           ~~~~^~~~~
/in/foo.cc:5:25: note: 'b' was declared here
    5 |         int n,m,cnt=0,a,b;
      |                         ^
/in/foo.cc:15:21: warning: 'a' may be used uninitialized [-Wmaybe-uninitialized]
   15 |                 if(a*a+b*b==m)
      |                    ~^~
/in/foo.cc:5:23: note: 'a' was declared here
    5 |         int n,m,cnt=0,a,b;
      |                       ^