foo.cc: In function 'void dts::main()':
foo.cc:80:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   80 |         scanf("%d",&n);
      |         ~~~~~^~~~~~~~~
foo.cc:82:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   82 |             scanf("%d",&a[i]);
      |             ~~~~~^~~~~~~~~~~~
foo.cc:84:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   84 |         scanf("%d",&m);
      |         ~~~~~^~~~~~~~~
foo.cc:88:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   88 |             scanf("%d%d%d",&K,&l,&r);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~
foo.cc:92:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   92 |                 scanf("%d",&val);
      |                 ~~~~~^~~~~~~~~~~

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