foo.cc: In function 'int main()':
foo.cc:6:32: warning: unused variable 'p' [-Wunused-variable]
    6 |         int A,B,a,b,c,t=0,d[N],p=0;
      |                                ^
foo.cc:16:30: warning: 'c' may be used uninitialized [-Wmaybe-uninitialized]
   16 |                 if(a==3||b==3||c==3)
      |                    ~~~~~~~~~~^~~~~~
foo.cc:6:21: note: 'c' was declared here
    6 |         int A,B,a,b,c,t=0,d[N],p=0;
      |                     ^

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