Compilare: user.cpp: In function ‘void dp(short int (*)[202], int, int, int, int, int, int)’: user.cpp:55:62: warning: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second: [enabled by default] d[i][j] = max(d[i][j], max(d[i-di][j], d[i][j-dj])); ^ In file included from /usr/include/c++/4.8/bits/char_traits.h:39:0, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/stl_algobase.h:216:5: note: candidate 1: const _Tp& std::max(const _Tp&, const _Tp&) [with _Tp = short int] max(const _Tp& __a, const _Tp& __b) ^ user.cpp:44:5: note: candidate 2: int max(short int&, int) int max(short &a, int b) ^ user.cpp:55:63: warning: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second: [enabled by default] d[i][j] = max(d[i][j], max(d[i-di][j], d[i][j-dj])); ^ In file included from /usr/include/c++/4.8/bits/char_traits.h:39:0, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/stl_algobase.h:216:5: note: candidate 1: const _Tp& std::max(const _Tp&, const _Tp&) [with _Tp = short int] max(const _Tp& __a, const _Tp& __b) ^ user.cpp:44:5: note: candidate 2: int max(short int&, int) int max(short &a, int b) ^