Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:77:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~ main.cpp:86:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int activate(int)': main.cpp:145:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:190:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < events.size(); i++){ ~~^~~~~~~~~~~~~~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:20:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^