foo.cc: In function 'int main()':
foo.cc:45:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d\n",&n,&m,&k);
~~~~~^~~~~~~~~~~~~~~~~~~~~
foo.cc:54:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%c",&c);
~~~~~^~~~~~~~~
foo.cc:58:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%c",&c);
~~~~~^~~~~~~~~
foo.cc:60:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%c",&c);
~~~~~^~~~~~~~~
foo.cc:63:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%c",&c);
~~~~~^~~~~~~~~
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