这题两种方法，挺简单

#include<bits/stdc++.h>
using namespace std;
int main() {
int a, b, c;
cin >> a >> b >> c;
cout << c << " " << b << " " << a;
return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main() {
int a, b, c;
cin >> a >> b >> c;
swap(a, c);
cout << a << " " << b << " " << c;
return 0;
}