/in/foo.cc: In function 'int main()':
/in/foo.cc:47:57: error: 'min' was not declared in this scope
             f[i][j] = min(f[i][j], f[i][j - 1] + w[i][j]);
                                                         ^
/in/foo.cc:49:57: error: 'min' was not declared in this scope
             f[i][j] = min(f[i][j], f[i][j + 1] + w[i][j]);
                                                         ^