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Lỗi biên dịch:

Main.cc: In function ‘int kt(char*)’:
Main.cc:52:20: error: ‘n’ was not declared in this scope
   52 |         if(s[i]!=s[n-1-i]){
      |                    ^
Main.cc: In function ‘int main()’:
Main.cc:63:10: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   63 |     fgets(s,100000,stdin);
      |     ~~~~~^~~~~~~~~~~~~~~~