C++ 代码

#include <iostream>
using namespace std;
int n;

int main(){
    cin >> n;
    string s;
    while(n --){
        cin >> s;
        string ret;
        for(char c : s){
            if(ret.size() >= 2 && (ret.back() == c && ret[ret.size() - 2] == c) // 错误一
            || (ret.size() >= 3 && ret.back() == c && ret[ret.size() - 2] == ret[ret.size() - 3])) // 错误二
                continue;
            ret.push_back(c);
        }
        cout << ret << endl;
    }
    return 0;
}