Compile Error
foo.cpp: In function 'int main()': foo.cpp:24:20: error: 'sort' was not declared in this scope foo.cpp:43:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'node' [-Wformat]
foo.cpp: In function 'int main()': foo.cpp:24:20: error: 'sort' was not declared in this scope foo.cpp:43:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'node' [-Wformat]
