Compilare: user.cpp: In function ‘void maxMatching()’: user.cpp:85:15: warning: variable ‘found’ set but not used [-Wunused-but-set-variable] bool found = false; ^ user.cpp:101:15: warning: variable ‘found’ set but not used [-Wunused-but-set-variable] bool found = false; ^ user.cpp:56:8: warning: variable ‘randInside’ set but not used [-Wunused-but-set-variable] int randInside = -1; ^ user.cpp: In function ‘void readTest()’: user.cpp:227:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:230:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &from, &to); ^ user.cpp: In function ‘int main()’: user.cpp:241:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plan.in", "r", stdin); ^ user.cpp:242:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("plan.out", "w", stdout); ^