foo.cc: In function 'int main()':
foo.cc:13:12: error: unable to find string literal operator 'operator""mas' with 'const char [4]', 'long unsigned int' arguments
   13 |     printf("%d "mas);
      |            ^~~~~~~~
foo.cc:5:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
    5 |   freopen("text.txt","r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
foo.cc:8:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    8 |   scanf("%d%d",&n,&lin);
      |   ~~~~~^~~~~~~~~~~~~~~~
foo.cc:12:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 |     scanf("%d",&mas);
      |     ~~~~~^~~~~~~~~~~

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