已写注释

#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
int main() {
    int n, m;
    cin >> n >> m;
    vector<int> fin(n);
    for (int i = 0; i < n; ++i)
        cin >> fin[i];
    m %= n;
    reverse(fin.begin(), fin.end());//将手指排列倒置
    reverse(fin.begin(), fin.begin() + m);//将前M个手指排列倒置
    reverse(fin.begin() + m, fin.end());//将剩下的手指排列倒置
    for (int i = 0; i < n - 1; ++i)
        cout << fin[i] << " ";
    cout << fin[n - 1] << endl;
    return 0;
}