// #include <ctime>
inline auto click()
{
static auto begin = clock();
auto end = clock();
auto ret = (float)(end - begin) / CLOCKS_PER_SEC;
begin = end;
return ret;
}
// #include <ctime>
inline auto click()
{
static auto begin = clock();
auto end = clock();
auto ret = (float)(end - begin) / CLOCKS_PER_SEC;
begin = end;
return ret;
}