View Compilation Error

0_0_23113645_10120.cpp: In function 'int main()':
0_0_23113645_10120.cpp:21:63: error: 'max' was not declared in this scope
                     dp[j] = max ( dp[j] , dp[j-1] + 2*dp[j-2] );  
                                                               ^
0_0_23113645_10120.cpp:21:63: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from 0_0_23113645_10120.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3454:5: note:   'std::max'
     max(initializer_list<_Tp> __l, _Compare __comp)
     ^
0_0_23113645_10120.cpp:23:51: error: 'max' was not declared in this scope
                     dp[j] = max ( dp[j] , dp[j-1] );  
                                                   ^
0_0_23113645_10120.cpp:23:51: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62:0,
                 from 0_0_23113645_10120.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:3454:5: note:   'std::max'
     max(initializer_list<_Tp> __l, _Compare __comp)
     ^