做了n遍不想再做了

#include <iostream>
#include <string>
using namespace std;
int main(){
    string s;
    cin >> s;
    int len = s.size();
    if(len >= 2 && s[len - 2] == 'e' && s[len - 1] == 'r'){
        for(int i = 0; i < len - 2; i++){
            cout << s[i];
        }
    }else if(len >= 2 && s[len - 2] == 'l' && s[len - 1] == 'y'){
        for(int i = 0; i < len - 2; i++){
            cout << s[i];
        }
    }else if(len >= 3 && s[len - 3] == 'i' && s[len - 2] == 'n' && s[len - 1] == 'g'){
        for(int i = 0; i < len - 3; i++){
            cout << s[i];
        }
    }else{
        cout << s;
    }
    return 0;
}