为什么我这个vector创建二维string出错了怎么改正？

Question

我的思路是用vector申请N行，每一行是一个字符串，结构编译器报错了，求改正后的代码，谢谢。

```c++
#include<iostream>
#include<string>
#include<vector>
using namespace std;
int main()
{
    int N;
    cin >> N;
    vector<string>e(N);
    for (int i = 0; i < N; ++i)
    {
        cin >> e[i];
        for (int j = 0; j < e[i].length(); ++j)
        {
            if (e[i][j] == e[i][j + 1] ==e[i][j + 2])
            {
                for (int k = j + 2; k < e[i].length() - (j + 2); ++k)
                    e[k] = e[k + 1];
                e[i][e[i].length() - (j + 2)-1]='\0';
            }
            else if (e[i][j] == e[i][j + 1] && e[i][j + 2] == e[i][j + 3]&& e[i][j + 4] != e[i][j + 5])
            {
                for (int k = j + 2; k < e[i].length() - (j + 2); ++k)
                    e[k] = e[k + 1];
                e[i][e[i].length() - (j + 2) - 1] = '\0';
            }
            else if(e[i][j] == e[i][j + 1] && e[i][j + 2] == e[i][j + 3] && e[i][j + 4] == e[i][j + 5])
            {
                for (int k = j + 2; k < e[i].length() - (j + 2); ++k)
                    e[k] = e[k + 1];
                e[i][e[i].length() - (j + 2) - 1] = '\0';
            }
        }
    }
    for (int i = 0; i < N; ++i)
        cout<<e[i]<<endl;
    return 0;
}

![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/220386342036169.png '38092E3420D4223C85D172348B6A1C31.png')

![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/964296342036133.png 'B9D44B8AE80AA903A80C5F0247EB63E1.png')