Compilare: user.cpp: In function 'void CIT()': user.cpp:17: warning: unused variable 'j' user.cpp: In function 'void OUT()': user.cpp:34: warning: comparison between signed and unsigned integer expressions user.cpp:36: warning: comparison between signed and unsigned integer expressions user.cpp:37: warning: comparison between signed and unsigned integer expressions user.cpp:43: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void solve()': user.cpp:58: warning: comparison between signed and unsigned integer expressions user.cpp:96: warning: comparison between signed and unsigned integer expressions user.cpp:56: warning: unused variable 'j' user.cpp: In function 'int main()': user.cpp:126: warning: comparison between signed and unsigned integer expressions