foo.cc: In function 'int main()':
foo.cc:7:6: error: invalid operands of types 'long double' and 'int' to binary 'operator%'
  if(n%4==1||n%4==2)
     ~^~
foo.cc:7:14: error: invalid operands of types 'long double' and 'int' to binary 'operator%'
  if(n%4==1||n%4==2)
             ~^~

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