#include <cstdio>
#include <algorithm>
int main()
{
int arr[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
std::swap(arr[0], arr[5]);
printf("%d", arr[0]);
return 0;
}
I2luY2x1ZGUgPGNzdGRpbz4KI2luY2x1ZGUgPGFsZ29yaXRobT4KCmludCBtYWluKCkKewoJaW50IGFycltdID0gezEsIDIsIDMsIDQsIDUsIDYsIDcsIDgsIDksIDEwfTsKCQoJc3RkOjpzd2FwKGFyclswXSwgYXJyWzVdKTsKCQoJcHJpbnRmKCIlZCIsIGFyclswXSk7CgkKCXJldHVybiAwOwp9