Compilare: main.cpp: In function 'int main()': main.cpp:59:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0; k<divi[i].size(); k++) ~^~~~~~~~~~~~~~~ main.cpp:15:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("loterie.in","r",stdin); ^ main.cpp:16:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("loterie.out","w",stdout); ^