numere8.cpp: In function 'void backt()': numere8.cpp:70: warning: unused variable 'es' numere8.cpp:70: warning: unused variable 'ev' numere8.cpp: In function 'int main()': numere8.cpp:124: warning: format '%d' expects type 'int', but argument 2 has type 'long long int' numere8.cpp:114: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result numere8.cpp:115: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result numere8.cpp:116: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result