Compilare: main.cpp: In function 'bool bfs(int, int)': main.cpp:34:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int calc(int, int)': main.cpp:76:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[dest].size();i++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:123:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sol.size();i++) ~^~~~~~~~~~~