foo.cc: In function 'int main()':
foo.cc:25:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s",s+1);
   ~~~~~^~~~~~~~~~
foo.cc:62:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld",&i,&j);
   ~~~~~^~~~~~~~~~~~~~~~~~

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