Compilare: main.cpp: In function 'int bellman_ford(int)': main.cpp:16:22: warning: unused variable 'w' [-Wunused-variable] int i, j,maxim=0,w,mx=0; ^ main.cpp:16:24: warning: unused variable 'mx' [-Wunused-variable] int i, j,maxim=0,w,mx=0; ^~ main.cpp:17:11: warning: unused variable 'ok' [-Wunused-variable] bool ok=0; ^~ main.cpp: In function 'int main()': main.cpp:48:12: warning: unused variable 'j' [-Wunused-variable] int i, j; ^ main.cpp:49:9: warning: unused variable 'aij' [-Wunused-variable] int aij,s;//s= nodul de start ^~~