View Compilation Error

0_0_19227192_20159.cpp: In function 'int main()':
0_0_19227192_20159.cpp:23:76: error: 'max' was not declared in this scope
           g[i - 1][j - k + 1] = max(g[i - 1][j - k + 1], g[i][j] + f[k + 1]);
                                                                            ^
0_0_19227192_20159.cpp:27:36: error: 'min' was not declared in this scope
       ans = min(ans, g[1][i] + f[i]);
                                    ^