foo.cc: In function 'int main()':
foo.cc:13:13: error: expected ';' before ':' token
   13 |   cout<<"No":
      |             ^
      |             ;
foo.cc:5:14: warning: unused variable 'y' [-Wunused-variable]
    5 |  int a,b,c,x,y;
      |              ^

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