Compilare: main.cpp: In function 'bool bfs()': main.cpp:20:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<L[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:22:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(C[nod][vecin].size()>F[nod][vecin]&&fr[vecin]==0){ ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:46:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(C[0][1].size()<k){ ~~~~~~~~~~~~~~^~ main.cpp:50:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<L[101].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:52:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(C[p][101].size()>F[p][101]&&fr[p]==1){ ~~~~~~~~~~~~~~~~^~~~~~~~~~