foo.cc: In function 'int main()':
foo.cc:68:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d%d",&t,&n,&k,&m);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
foo.cc:72:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d",&x,&y,&z);
~~~~~^~~~~~~~~~~~~~~~~~~
foo.cc:86:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&d);
~~~~~^~~~~~~~~
foo.cc:90:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d",&x,&y,&z);
~~~~~^~~~~~~~~~~~~~~~~~~
