Compilare: user.cpp: In function ‘void upd(int, int, int, int, int)’: user.cpp:18:19: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] int m = b + e >> 1; ^ user.cpp: In function ‘void reset(int, int, int)’: user.cpp:37:15: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] int m = b + e >> 1; ^ user.cpp: In function ‘int main()’: user.cpp:48:12: warning: unused variable ‘hashes’ [-Wunused-variable] int n, hashes = 0; ^ user.cpp:45:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subpermutari.in", "r", stdin); ^ user.cpp:46:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subpermutari.out", "w", stdout); ^