Compilare: user.cpp: In function ‘int get_p(point)’: user.cpp:188:9: warning: unused variable ‘res’ [-Wunused-variable] int res = m[{X, Y}]; ^ user.cpp: In function ‘int main()’: user.cpp:204:9: warning: unused variable ‘init’ [-Wunused-variable] int init = clock(); ^ user.cpp:258:9: warning: unused variable ‘res’ [-Wunused-variable] int res = E - V + C + 1; ^ user.cpp:201:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cerc.in", "r", stdin); ^ user.cpp:202:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cerc.out", "w", stdout); ^