foo.cc: In function 'void init()':
foo.cc:15:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&noww,&n);
     ~~~~~^~~~~~~~~~~~~~~~~
foo.cc:17:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     {scanf("%d",&c[i]);totalw+=c[i];}
      ~~~~~^~~~~~~~~~~~

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