#include <iostream>
#include <algorithm>
using namespace std;
int main() {
int v[] = {1, 2, 3, 4};
rotate(begin(v), begin(v)+1, end(v));
for(auto e: v) {
cout << e;
}
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8YWxnb3JpdGhtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7CglpbnQgdltdID0gezEsIDIsIDMsIDR9OwoJcm90YXRlKGJlZ2luKHYpLCBiZWdpbih2KSsxLCBlbmQodikpOwoJZm9yKGF1dG8gZTogdikgewoJCWNvdXQgPDwgZTsKCX0KCXJldHVybiAwOwp9