foo.cc: In function 'int main()':
foo.cc:56:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   56 |  scanf("%d%d",&n,&g);
      |  ~~~~~^~~~~~~~~~~~~~
foo.cc:59:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   59 |   scanf("%s",c);
      |   ~~~~~^~~~~~~~

[Hydro](https://hydro.ac)提供评测服务