foo.cc: In function 'int main()':
foo.cc:17:15: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   if(a[i%x]==2&&b[i%y]==5||a[i%x]==0&&b[i%y]==2||a[i%x]==5&&b[i%y]==0)
      ~~~~~~~~~^~~~~~~~~~~
foo.cc:17:59: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   if(a[i%x]==2&&b[i%y]==5||a[i%x]==0&&b[i%y]==2||a[i%x]==5&&b[i%y]==0)
                                                  ~~~~~~~~~^~~~~~~~~~~
foo.cc:20:16: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    if(a[i%x]==5&&b[i%y]==2||a[i%x]==2&&b[i%y]==0||a[i%x]==0&&b[i%y]==5)
       ~~~~~~~~~^~~~~~~~~~~
foo.cc:20:60: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    if(a[i%x]==5&&b[i%y]==2||a[i%x]==2&&b[i%y]==0||a[i%x]==0&&b[i%y]==5)
                                                   ~~~~~~~~~^~~~~~~~~~~

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