Compilare: main.cpp: In function 'void bfs(int)': main.cpp:35:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < l[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int dijkstra(int, int)': main.cpp:74:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < l[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: At global scope: main.cpp:92:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main() ^