Submission #20,929

20929

2026-01-11 14:30:08

cpp17

Accepted 50/50

223ms

9524 KiB

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

int main()
{
    int n;
    cin >> n;
    vector<int> arr(n + 1, 0);
    for (int i=0; i < n; i++) cin >> arr[i];

    set<int> seen;
    int ans = n - 1;

    for (int i = n - 1; i >= 0; i--) {
        if (!seen.count(arr[i])) {
            seen.insert(arr[i]);
            ans = i;
        }
    }

    cout << ans + 1 << '\n';

    return 0;
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	1ms	500 KiB
		2	Accepted	0/0	12ms	820 KiB
		3	Accepted	5/5	1ms	316 KiB
		4	Accepted	5/5	1ms	316 KiB
		5	Accepted	5/5	70ms	1076 KiB
		6	Accepted	5/5	70ms	1192 KiB
		7	Accepted	4/4	158ms	7084 KiB
		8	Accepted	4/4	160ms	6824 KiB
		9	Accepted	4/4	156ms	5940 KiB
		10	Accepted	4/4	150ms	5544 KiB
		11	Accepted	4/4	143ms	4788 KiB
		12	Accepted	2/2	170ms	5032 KiB
		13	Accepted	2/2	221ms	9524 KiB
		14	Accepted	1/1	223ms	9384 KiB
		15	Accepted	1/1	217ms	9268 KiB
		16	Accepted	1/1	204ms	7600 KiB
		17	Accepted	1/1	173ms	5428 KiB
		18	Accepted	1/1	128ms	1588 KiB
		19	Accepted	1/1	123ms	1192 KiB