Compilare: main.cpp: In function 'int main()': main.cpp:109:33: warning: iteration 1 invokes undefined behavior [-Waggressive-loop-optimizations] reverse(w[i]+1,w[i]+lg[i]+1); ~~~~^ main.cpp:103:18: note: within this loop for(int i=1;i<=2;i++) ~^~~ main.cpp:87:24: warning: array subscript is above array bounds [-Warray-bounds] v[2][++lg[2]]=nr; ~~~~^ main.cpp:87:24: warning: array subscript is above array bounds [-Warray-bounds] main.cpp:90:15: warning: array subscript is above array bounds [-Warray-bounds] lg[1]=lg[2]=0; ~~~~^ main.cpp:99:24: warning: array subscript is above array bounds [-Warray-bounds] w[2][++lg[2]]=nr; ~~~~^ main.cpp:99:24: warning: array subscript is above array bounds [-Warray-bounds]