Compilare: user.cpp: In function ‘int rez(int)’: user.cpp:30: warning: suggest parentheses around ‘+’ in operand of ‘&’ user.cpp: In function ‘int solve(int, int)’: user.cpp:37: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp: In function ‘int main()’: user.cpp:49: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:51: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result