Compilare: user.cpp: In function ‘void dijkstra(int)’: user.cpp:63:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < L[node].size(); i++) { ^ user.cpp: In function ‘bool BF()’: user.cpp:103:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < L2[node].size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:172:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L2[source].size(); i++) ^ user.cpp:175:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < L2[source].size(); i++) { ^ user.cpp:177:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < L2[destination].size(); j++) { ^