Compilare: main.cpp: In function 'void dijkstra(int)': main.cpp:27:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graph[index].size(); i++) ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:55:17: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result] system("pause"); ^