Compilare: main.cpp: In function 'bool bfs()': main.cpp:25:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int ford_fulkerson(int, int)': main.cpp:50:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[n].size(); i++) ~^~~~~~~~~~~~ main.cpp:46:9: warning: unused variable 'u' [-Wunused-variable] int u,q; ^ main.cpp:46:11: warning: unused variable 'q' [-Wunused-variable] int u,q; ^ main.cpp: In function 'int main()': main.cpp:94:22: warning: unused variable 't' [-Wunused-variable] int x, y, z, t; ^ main.cpp:90:9: warning: unused variable 'ok' [-Wunused-variable] int ok=1; ^~