Compilare: user.cpp: In function ‘void back1(int)’: user.cpp:121:34: warning: array subscript is above array bounds [-Warray-bounds] for(i=st[k-1][1]+1;i<=st[k][2];i++) ^ user.cpp: In function ‘void back2(int)’: user.cpp:147:34: warning: array subscript is above array bounds [-Warray-bounds] for(i=st[k-1][1]+1;i<=st[k][2];i++) ^ user.cpp: In function ‘int main()’: user.cpp:183:14: warning: array subscript is above array bounds [-Warray-bounds] st[2*n][2]=(1<<n)-1; ^ user.cpp:185:27: warning: array subscript is above array bounds [-Warray-bounds] st[i][2]=st[i+1][2]-1; ^ user.cpp:185:16: warning: array subscript is above array bounds [-Warray-bounds] st[i][2]=st[i+1][2]-1; ^