题解 | #从单向链表中删除指定值的节点#

#include <iostream>
#include<bits/stdc++.h>
using namespace std;

int main() {
    int n;
    int head;
    cin >> n >> head;
    forward_list<int> flist;
    flist.push_front(head);

    for (int i = 1; i < n ; i++) {
        int front, back;
        cin >> back >> front;
        // cout << "cin back:" << back << endl;
        auto iter = find(flist.begin(), flist.end(), front);
        // cout << "back:" << back << endl;
        flist.insert_after(iter, back);

    }
    int tor;
    cin >> tor;
    // cout << "back:" << tor << endl;
    flist.remove(tor);
    for (auto ch : flist) {
        cout << ch << ' ' ;
    }
}