Compilare: user.cpp: In function ‘void bfs(int, int)’: user.cpp:28:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<v[nod].size(); i++) ^ user.cpp: In function ‘void flux(int, int, int)’: user.cpp:46:9: warning: unused variable ‘ss’ [-Wunused-variable] int ss=0; ^ user.cpp: In function ‘void dfs(int, int)’: user.cpp:102:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[x].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:147:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<sol.size(); i++) ^