Compilare: user.cpp: In function ‘int solve()’: user.cpp:67:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:78:12: warning: unused variable ‘tic’ [-Wunused-variable] time_t tic = clock(); ^ user.cpp:82:12: warning: unused variable ‘toc’ [-Wunused-variable] time_t toc = clock(); ^ user.cpp:75:46: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dreptunghiuri5.in", "rt", stdin); ^ user.cpp:76:48: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dreptunghiuri5.out", "wt", stdout); ^