foo.cc: In function 'int main()':
foo.cc:7:28: warning: unused variable 'd' [-Wunused-variable]
  int a,q,w,e,r,t,y,u,i,o,p,d,s; 
                            ^
foo.cc:7:30: warning: unused variable 's' [-Wunused-variable]
  int a,q,w,e,r,t,y,u,i,o,p,d,s; 
                              ^

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