The Japanese language is notorious for its sentence ending particles. Personal preference of such particles can be considered as a reflection of the speaker’s personality. Such a preference is called “Kuchiguse” and is often exaggerated artistically in Anime and Manga. For example, the artificial sentence ending particle “nyan~” is often used as a stereotype for characters with a cat-like personality:

Itai nyan~ (It hurts, nyan~)
Ninjin wa iyada nyan~ (I hate carrots, nyan~)
Now given a few lines spoken by the same character, can you find her Kuchiguse?

Input Specification:

Each input file contains one test case. For each case, the first line is an integer N (2<=N<=100). Following are N file lines of 0~256 (inclusive) characters in length, each representing a character’s spoken line. The spoken lines are case sensitive.

Output Specification:

For each test case, print in one line the kuchiguse of the character, i.e., the longest common suffix of all N lines. If there is no such suffix, write “nai”.

Sample Input 1:

3
Itai nyan~
Ninjin wa iyadanyan~
uhhh nyan~

Sample Output 1:

nyan~

Sample Input 2:

3
Itai!
Ninjinnwaiyada T_T
T_T

Sample Output 2:

nai

生词

题目大意：

给定N给字符串，求他们的公共后缀，如果不存在公共后缀，就输出“nai”

分析：

因为是后缀，反过来比较太麻烦，所以每输入一个字符串，就把它逆序过来再比较，就会比较容易啦～
首先ans = s；后来每输入的一个字符串，都和ans比较，如果后面不相同的就把它截取掉～最后输出ans即可（要逆序输出～所以先将ans倒置reverse一下～）

原文链接：https://blog.csdn.net/liuchuo/article/details/52122061

题解

#include 

using namespace std;

int main()
{
#ifdef ONLINE_JUDGE
#else
    freopen("1.txt", "r", stdin);
#endif
    int n;
    cin>>n;
    getchar();
    string s,ans;
    for(int i=0;i