foo.cc: In function 'int main()':
foo.cc:63:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
63 | scanf("%d %d %d", &n, &k, &m);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
foo.cc:65:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
65 | scanf("%s", tk);
| ~~~~~^~~~~~~~~~
foo.cc:70:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
70 | scanf("%s %[^\n]", peo, tk);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~
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