1. #include<iostream>
    2. #include<string>
    3. #include<algorithm>
    4. using namespace std;
    5. int main() {
    6.     string s[200];
    7.     int i = 0; int n = 0,count=0;
    8.     cin >> n;
    9.     while (cin >> s[count]) {
    10.         count++;
    11.     }
    12.     if (n > count) cout << "error" << endl;
    13.     else {
    14.         for (i=count-1; i>=0; i--) {  // 依次后移
    15.             s[i + n] = s[i];
    16.         }
    17.         for (i = 0; i < n; i++) {  // 找到最前面的单词
    18.             s[i] = s[count+i];
    19.         }
    20.         for (i = 0; i < count; i++) {
    21.             cout << s[i]<<" ";
    22.         }
    23.     }
    24. }