Accepted
foo.cc: In function 'int main()':
foo.cc:8:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
8 | scanf("%d",&n);
| ~~~~~^~~~~~~~~
foo.cc:11:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
11 | scanf("%d%d",&a,&b);
| ~~~~~^~~~~~~~~~~~~~
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