xiaosuo

#include <iostream>
#include <string>

using namespace std;

static ssize_t *memory = nullptr;

size_t lcs(const string &s1, const std::string &s2, size_t i1, size_t i2) {
  if (!memory) {
    size_t size = (s1.size() + 1) * (s2.size() + 1);

xiaosuo

class Defer {
 public:
  explicit Defer(std::function<void()> func) : func_(func) {}
  ~Defer() { func_(); }

 private:
  Defer(const Defer &) = delete;
  Defer& operator=(const Defer &) = delete;
  std::function<void()> func_;
};