View Compilation Error

0_0_20834656_26202.cpp: In function 'int main()':
0_0_20834656_26202.cpp:28:49: error: 'max' was not declared in this scope
      if (b[k] < b[j]) Max = max(Max, f[i - 1][k]);
                                                 ^
0_0_20834656_26202.cpp:30:27: error: 'max' was not declared in this scope
     ans = max(ans, Max + 1);
                           ^