Submission #24,690

2026-02-13 20:44:32

cpp14

Accepted 75/75

14ms

1524 KiB

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int, int>
#define F first
#define S second
#define pb push_back
#define srt(x) x.begin(),x.end()
const int INF = 1e9 + 7;
 
signed main() {
	ios::sync_with_stdio(false);cin.tie(nullptr);
    int n; cin >> n;
    int ans = 0;
    queue<int>q, q2;
    vector<bool>vis(n+1);
    for(int i = 0; i < n; i++)
    {
        int x; cin >> x;
        q.push(x);
    }
    while(true)
    {
        if(ans == n) break;
        if(vis[ans+1] && ans+1 != q2.front()) break;
        if(vis[ans+1])
        {
            q2.pop();
            ans++;
        }
        else
        {
            while(q.front() != ans+1)
            {
                vis[q.front()] = 1;
                q2.push(q.front());
                q.pop();
            }
            q.pop();
            ans++;
        }
    }
    cout << ans;
}

	Sum	Test	Verdict	Time	Memory
subtask1	0/0
subtask1	0/0	1	Accepted	1ms	316 KiB
subtask2	6/6
		2	Accepted	1ms	316 KiB
		3	Accepted	1ms	316 KiB
		4	Accepted	1ms	316 KiB
		5	Accepted	1ms	316 KiB
		6	Accepted	1ms	316 KiB
		7	Accepted	1ms	316 KiB
subtask3	21/21
		8	Accepted	2ms	316 KiB
		9	Accepted	2ms	316 KiB
		10	Accepted	2ms	316 KiB
		11	Accepted	1ms	316 KiB
		12	Accepted	1ms	316 KiB
		13	Accepted	1ms	316 KiB
		14	Accepted	1ms	316 KiB
		15	Accepted	1ms	316 KiB
		16	Accepted	1ms	356 KiB
		17	Accepted	1ms	316 KiB
		18	Accepted	1ms	316 KiB
		19	Accepted	1ms	316 KiB
		20	Accepted	1ms	316 KiB
		21	Accepted	1ms	316 KiB
		22	Accepted	1ms	316 KiB
		23	Accepted	1ms	316 KiB
		24	Accepted	1ms	316 KiB
		25	Accepted	1ms	316 KiB
		26	Accepted	1ms	316 KiB
		27	Accepted	1ms	508 KiB
		28	Accepted	1ms	316 KiB
subtask4	24/24
		29	Accepted	1ms	316 KiB
		30	Accepted	1ms	316 KiB
		31	Accepted	1ms	500 KiB
		32	Accepted	1ms	316 KiB
		33	Accepted	1ms	316 KiB
		34	Accepted	1ms	316 KiB
		35	Accepted	1ms	316 KiB
		36	Accepted	1ms	532 KiB
		37	Accepted	1ms	316 KiB
		38	Accepted	1ms	316 KiB
		39	Accepted	1ms	316 KiB
		40	Accepted	1ms	316 KiB
		41	Accepted	1ms	508 KiB
		42	Accepted	1ms	500 KiB
		43	Accepted	1ms	508 KiB
		44	Accepted	1ms	316 KiB
		45	Accepted	1ms	508 KiB
		46	Accepted	1ms	332 KiB
		47	Accepted	1ms	316 KiB
		48	Accepted	1ms	316 KiB
		49	Accepted	1ms	316 KiB
		50	Accepted	1ms	316 KiB
		51	Accepted	1ms	500 KiB
		52	Accepted	1ms	508 KiB
subtask5	24/24
		53	Accepted	12ms	1076 KiB
		54	Accepted	12ms	1104 KiB
		55	Accepted	12ms	1076 KiB
		56	Accepted	13ms	1216 KiB
		57	Accepted	13ms	1076 KiB
		58	Accepted	14ms	1028 KiB
		59	Accepted	13ms	1032 KiB
		60	Accepted	12ms	1144 KiB
		61	Accepted	12ms	1268 KiB
		62	Accepted	13ms	1076 KiB
		63	Accepted	13ms	1076 KiB
		64	Accepted	13ms	1524 KiB
		65	Accepted	13ms	1076 KiB
		66	Accepted	13ms	1240 KiB
		67	Accepted	13ms	1128 KiB
		68	Accepted	14ms	1216 KiB
		69	Accepted	12ms	1424 KiB
		70	Accepted	12ms	1268 KiB
		71	Accepted	12ms	1128 KiB
		72	Accepted	13ms	1080 KiB
		73	Accepted	13ms	1208 KiB
		74	Accepted	13ms	1080 KiB
		75	Accepted	13ms	1088 KiB
		76	Accepted	13ms	1208 KiB