Compilare: main.cpp: In function 'void bfs(int)': main.cpp:23:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<lista[frontOfCue].size(); i++) ~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void findUsedNodes(int)': main.cpp:43:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<lista[frontCue].size(); i++) ~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:41:13: warning: unused variable 'counter' [-Wunused-variable] int counter = 0; ^~~~~~~ main.cpp: In function 'int findUsedNodes2(int, int, std::vector<int>)': main.cpp:59:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<lista[y].size();i++) ~^~~~~~~~~~~~~~~~ main.cpp:68:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:83:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0;j<finalList[i].size();j++) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:87:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int f = 1;f<finalList.size();f++) ~^~~~~~~~~~~~~~~~~ main.cpp:90:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int g = 0;g<finalList[f].size();g++) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:107:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<Output.size();i++) ~^~~~~~~~~~~~~~