openjudge上全局题号25210

WA了，感觉没什么问题，水题切不掉了

#include <bits/stdc++.h>
#define JS ios::sync_with_stdio(false),cin.tie(nullptr),cout.tie(nullptr)
using namespace std;
vector<int> v;
int n, sum = 1, t, k;

int main() {
	JS;
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> t;
		v.push_back(t);
		/*for (auto it : v) {
			cout << it << " ";
		}
		cout << endl;*/
		if (v.back() == k) {
			sum++;
			if (sum == k) {
				while (k--) {
					v.pop_back();
				}
				k = v.back();
				sum = 1;
			}
		} else {
			k = v.back();
			sum = 1;
		}
		//cout << sum << endl;
		cout << v.size() << endl;
	}
	return 0;
}