foo.cc: In function 'int main()':
foo.cc:11:6: warning: unused variable 's' [-Wunused-variable]
   11 | char s[100];
      |      ^
foo.cc:12:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 | scanf("%d%d%d",&n,&m,&t);
      | ~~~~~^~~~~~~~~~~~~~~~~~~
foo.cc:13:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   13 | scanf("\n");
      | ~~~~~^~~~~~
foo.cc:21:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   21 | scanf("%c",&y[k][i][j]);
      | ~~~~~^~~~~~~~~~~~~~~~~~
foo.cc:24:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   24 | scanf("\n");
      | ~~~~~^~~~~~
foo.cc:26:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   26 | scanf("\n");
      | ~~~~~^~~~~~

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