Compilare: main.cpp: In function 'void prim()': main.cpp:32:17: warning: array subscript is above array bounds [-Warray-bounds] viz[nmax]=0; ~~~~~~~~^ main.cpp:33:18: warning: array subscript is above array bounds [-Warray-bounds] tata[nmax]=0; ~~~~~~~~~^ main.cpp:48:15: warning: 'd' may be used uninitialized in this function [-Wmaybe-uninitialized] viz[d]=1; ~~~~~~^~ main.cpp:50:21: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized] ctot+=c[s][d]; ~~~~~~^