Compilare: user.cpp: In function ‘void Bellman_Ford(int, int)’: user.cpp:27:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<a[q.front()].size(); i++) ^ user.cpp:14:12: warning: unused variable ‘prim’ [-Wunused-variable] int i, prim, ultim; ^ user.cpp:14:18: warning: unused variable ‘ultim’ [-Wunused-variable] int i, prim, ultim; ^ user.cpp: In function ‘int main()’: user.cpp:75:32: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(fout, "%d\n", minim); ^ user.cpp:82:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<a[i].size() && ok==1; j++) { ^ user.cpp:97:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<a[i].size() && ok==1; j++) { ^ user.cpp:112:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<a[i].size() && ok==1; j++) { ^ user.cpp:54:23: warning: unused variable ‘x’ [-Wunused-variable] int aa, b, i, p, x, y, q, c, cost; ^ user.cpp:54:26: warning: unused variable ‘y’ [-Wunused-variable] int aa, b, i, p, x, y, q, c, cost; ^ user.cpp:109:14: warning: ‘imin’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol2[0]=i; ^