Compilare: main.cpp: In constructor 'maximumBipartiteMatching::maximumBipartiteMatching()': main.cpp:15:10: warning: 'maximumBipartiteMatching::created' will be initialized after [-Wreorder] bool created; ^~~~~~~ main.cpp:12:11: warning: 'bool* maximumBipartiteMatching::visited' [-Wreorder] bool *visited; ^~~~~~~ main.cpp:37:5: warning: when initialized here [-Wreorder] maximumBipartiteMatching(): ^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:110:30: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<std::pair<unsigned int, unsigned int> >::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n", ans.size()); ^ main.cpp:97:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cuplaj.in","r",stdin); ^ main.cpp:98:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cuplaj.out","w",stdout); ^ main.cpp:101:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&n,&m,&cnt); ^ main.cpp:105:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&x,&y); ^