Compilare: user.cpp: In function 'void preproc()': user.cpp:34: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void dynamic()': user.cpp:51: warning: comparison between signed and unsigned integer expressions user.cpp:53: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int solve()': user.cpp:67: warning: comparison between signed and unsigned integer expressions user.cpp:68: warning: comparison between signed and unsigned integer expressions user.cpp:85: warning: comparison between signed and unsigned integer expressions user.cpp:86: warning: comparison between signed and unsigned integer expressions