2020安徽程序设计省赛 G序列游戏

#include <iostream>
#include <vector>

using namespace std;

void printSequence(const vector<int>& a)
{
    for(auto it : a)
    {
        cout << it;
    }
    cout << endl;
}

void deleteSequence(vector<int>& w, const vector<int>& a)
{
	bool flag = false;
    for(auto it : a)
    {
        if(it <= w.size())
        {
        	int n = it;
        	if(flag)
        	{
        		n--;
			}
            w.erase(w.begin() + (n - 1));
            flag = true;
        }
        else 
        {
        	flag = false;
		}
    }
}

int main()
{
    vector<int> w, a;
    int n, m, op, temp;
    cin >> n;
    cin >> m;
    for(int i = 0; i < m; i++)
    {
        cin >> temp;
        a.push_back(temp);
    }

    while(n > 0)
    {
        cin >> op;
        switch(op)
        {
            case 0:
                w.push_back(0);
                break;
            case 1:
                w.push_back(1);
                break;
            case -1:
                deleteSequence(w, a);
                break;
            default:
                cout << "输入有误，请重新输入(0, 1, -1)!" << endl;
                continue;
        }
        n--;
    }

    if(w.empty())
    {
        cout << "Poor stack!" << endl;
        return 0;
    }

    printSequence(w);

    return 0;
}