这道题十分简单，只要运用好string内部的函数就行，废话不多说，上代码！！！
#include <iostream>
#include <string>
using namespace std;
const int MAX_N = 100010;
string s[MAX_N];
int main() {
int n;
cin >> n;
for (int i = 0; i < n; i++) {
cin >> s[i];
}
string c = s[0];
for (int i = 1; i < n; i++) {
if (c.back() == s[i][0]) {
c += s[i].substr(1);
}
}
cout << c << endl;
return 0;
}
