Compilare: main.cpp: In function 'bool bfs()': main.cpp:36:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[node].size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void BFS1()': main.cpp:63:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[node].size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void BFSN()': main.cpp:88:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[node].size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:119:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[N].size(); i++) ~~^~~~~~~~~~~~~ main.cpp:150:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sol.size(); i++) ~~^~~~~~~~~~~~