foo.cc: In function 'long long int ISAP(std::__cxx11::string)':
foo.cc:37:4: warning: value computed is not used [-Wunused-value]
   t==Gt(S,inf);
   ~^~~~~~~~~~~
foo.cc: In function 'long long int read()':
foo.cc:54:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&k);
  ~~~~~^~~~~~~~~~~

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