Compilare: user.cpp: In function ‘void SolveDPU(int, bool)’: user.cpp:18: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void SolveDP(int)’: user.cpp:38: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void Dfs(int, int)’: user.cpp:56: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void Solve()’: user.cpp:85: warning: comparison between signed and unsigned integer expressions user.cpp:77: warning: ‘Nod’ may be used uninitialized in this function user.cpp:77: warning: ‘X’ may be used uninitialized in this function