铁轨

 

#include<cstdio>
#include<iostream>
using namespace std;
#include<stack>
#include<cstring>
int a[10100000];
int main(void)
{
    stack<int> s;
    int n;
    while (cin >> n && n)
    {
        memset(a, 0, sizeof(a));
        for (int i = 1; cin >> a[i] && a[i] != 0; i++);

        int rec = 1;
        while (a[rec])
        {
            int  ok = 1;
            int A = 1;
            int B = rec;
            while (B <rec+n)//核心代码
            {
                if (A == a[B]) { A++; B++; }//如果相同那么直接进入b
                else if (!s.empty() && s.top() == a[B]) { s.pop(); B++; }//如果不相同那么和栈顶比较
                else if (A <= n)s.push(A++);//以上两个都不可以那么将A插入栈顶
                else { ok = 0; break; }//A已经超过了n说明不能进入
            }
            if (ok)cout << "Yes" << endl;
            else cout << "No" << endl;
            rec += n;
        }
        cout << endl;
    }
    return 0;
}

 

标签：int,铁轨,cin,while,&&,rec,include
来源： https://www.cnblogs.com/loliconsk/p/14363554.html