Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:71:77: warning: suggest parentheses around comparison in operand of ‘!=’ [-Wparentheses] ans = max(ans, dpu[i][j] + dpd[i][j] + dpr[i][j] + dpl[i][j] - dpu[i][j] != 0 - dpr[i][j] != 0 - dpl[i][j] != 0 - dpd[i][j] != 0 + 1); ^ user.cpp:71:94: warning: suggest parentheses around comparison in operand of ‘!=’ [-Wparentheses] ans = max(ans, dpu[i][j] + dpd[i][j] + dpr[i][j] + dpl[i][j] - dpu[i][j] != 0 - dpr[i][j] != 0 - dpl[i][j] != 0 - dpd[i][j] != 0 + 1); ^ user.cpp:71:111: warning: suggest parentheses around comparison in operand of ‘!=’ [-Wparentheses] ans = max(ans, dpu[i][j] + dpd[i][j] + dpr[i][j] + dpl[i][j] - dpu[i][j] != 0 - dpr[i][j] != 0 - dpl[i][j] != 0 - dpd[i][j] != 0 + 1); ^ user.cpp:71:136: error: no matching function for call to ‘max(int&, bool)’ ans = max(ans, dpu[i][j] + dpd[i][j] + dpr[i][j] + dpl[i][j] - dpu[i][j] != 0 - dpr[i][j] != 0 - dpl[i][j] != 0 - dpd[i][j] != 0 + 1); ^ user.cpp:71:136: note: candidates are: 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:2: /usr/include/c++/4.8/bits/stl_algobase.h:216:5: note: template<class _Tp> const _Tp& std::max(const _Tp&, const _Tp&) max(const _Tp& __a, const _Tp& __b) ^ /usr/include/c++/4.8/bits/stl_algobase.h:216:5: note: template argument deduction/substitution failed: user.cpp:71:136: note: deduced conflicting types for parameter ‘const _Tp’ (‘int’ and ‘bool’) ans = max(ans, dpu[i][j] + dpd[i][j] + dpr[i][j] + dpl[i][j] - dpu[i][j] != 0 - dpr[i][j] != 0 - dpl[i][j] != 0 - dpd[i][j] != 0 + 1); ^ 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:2: /usr/include/c++/4.8/bits/stl_algobase.h:260:5: note: template<class _Tp, class _Compare> const _Tp& std::max(const _Tp&, const _Tp&, _Compare) max(const _Tp& __a, const _Tp& __b, _Compare __comp) ^ /usr/include/c++/4.8/bits/stl_algobase.h:260:5: note: template argument deduction/substitution failed: user.cpp:71:136: note: deduced conflicting types for parameter ‘const _Tp’ (‘int’ and ‘bool’) ans = max(ans, dpu[i][j] + dpd[i][j] + dpr[i][j] + dpl[i][j] - dpu[i][j] != 0 - dpr[i][j] != 0 - dpl[i][j] != 0 - dpd[i][j] != 0 + 1); ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:5: /usr/include/c++/4.8/bits/stl_algo.h:4254:5: note: template<class _Tp> _Tp std::max(std::initializer_list<_Tp>) max(initializer_list<_Tp> __l) ^ /usr/include/c++/4.8/bits/stl_algo.h:4254:5: note: template argument deduction/substitution failed: user.cpp:71:136: note: mismatched types ‘std::initializer_list<_Tp>’ and ‘int’ ans = max(ans, dpu[i][j] + dpd[i][j] + dpr[i][j] + dpl[i][j] - dpu[i][j] != 0 - dpr[i][j] != 0 - dpl[i][j] != 0 - dpd[i][j] != 0 + 1); ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:5: /usr/include/c++/4.8/bits/stl_algo.h:4259:5: note: template<class _Tp, class _Compare> _Tp std::max(std::initializer_list<_Tp>, _Compare)