Compilare: user.cpp: In function ‘double tg(std::pair<double, double>)’: user.cpp:8:22: warning: integer overflow in expression [-Woverflow] #define INF ((1<<31)-1) ^ user.cpp:59:20: note: in expansion of macro ‘INF’ return INF; ^ user.cpp:8:22: warning: integer overflow in expression [-Woverflow] #define INF ((1<<31)-1) ^ user.cpp:61:20: note: in expansion of macro ‘INF’ return INF-1; ^ user.cpp: In function ‘void citire()’: user.cpp:8:22: warning: integer overflow in expression [-Woverflow] #define INF ((1<<31)-1) ^ user.cpp:76:23: note: in expansion of macro ‘INF’ mini.x = mini.y = INF; ^ user.cpp:72:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infasuratoare.in", "rt", stdin); ^ user.cpp:73:47: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infasuratoare.out", "wt", stdout); ^ user.cpp:74:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:78:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &a, &b); ^