Compilare: user.cpp: In function ‘int main()’: user.cpp:110:36: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘std::queue<int>::size_type {aka long unsigned int}’ [-Wformat=] printf("%d\n", Answer.size()); ^ user.cpp:104:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("markon.in" , "r" , stdin); ^ user.cpp:105:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("markon.out" ,"w" , stdout); ^ user.cpp: In function ‘void Read()’: user.cpp:23:67: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d" , &numberOfNodes , &numberOfEdges , &StartNode); ^ user.cpp:27:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &Unknown[i]); ^ user.cpp:33:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d" , &x , &y); ^