Compilare: main.cpp: In function 'int BF()': main.cpp:25:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0 ; j < v[node].size() ; j++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:48:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0 ; i < v[n].size() ; i++){ ~~^~~~~~~~~~~~~ main.cpp:38:11: warning: unused variable 'j' [-Wunused-variable] int i,j,x,y,z,node,flow = 0,fmin; ^