Compilare: main.cpp: In function 'void RUSSIAN_BOMB_HARDBASS(int, int)': main.cpp:18:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int it=0;it<g[nod].size();it++) ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:40:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("orient.in","r",stdin); freopen("orient.out","w",stdout); ^ main.cpp:40:69: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("orient.in","r",stdin); freopen("orient.out","w",stdout); ^