Compilare: main.cpp: In function 'void Dijkstra(int, int)': main.cpp:45:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < nou[x].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void Dijkstra1(int, int)': main.cpp:71:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[x].size(); i++) ~~^~~~~~~~~~~~~ main.cpp: In function 'void DFS(int)': main.cpp:87:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[x].size(); i++) ~~^~~~~~~~~~~~~ main.cpp: In function 'void DFS2(int, int, int)': main.cpp:104:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[x].size(); i++) ~~^~~~~~~~~~~~~