Submission #17,608

2025-08-09 15:33:44

cpp17

Accepted 50/50

207ms

9612 KiB

// UUID: 37e18fae-948e-40db-b49e-3409835df82a
#include <bits/stdc++.h>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    
	int n;
    cin >> n;
    vector<int> v(n);
    set <int> s;
    for(int i=0; i<n; i++){
        cin >> v[i];
        s.insert(v[i]); 
    }
    for(int i=v.size()-1; i>0; i--){
        if(s.count(v[i])) s.erase(v[i]);
        if(s.empty()) {
            cout << i+1;
            return 0;
        }
    }
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	1ms	500 KiB
		2	Accepted	0/0	9ms	820 KiB
		3	Accepted	5/5	1ms	316 KiB
		4	Accepted	5/5	1ms	316 KiB
		5	Accepted	5/5	32ms	1076 KiB
		6	Accepted	5/5	32ms	1076 KiB
		7	Accepted	4/4	166ms	7036 KiB
		8	Accepted	4/4	162ms	6732 KiB
		9	Accepted	4/4	145ms	5940 KiB
		10	Accepted	4/4	131ms	5428 KiB
		11	Accepted	4/4	119ms	4844 KiB
		12	Accepted	2/2	146ms	5172 KiB
		13	Accepted	2/2	202ms	9612 KiB
		14	Accepted	1/1	207ms	9524 KiB
		15	Accepted	1/1	194ms	9228 KiB
		16	Accepted	1/1	172ms	7736 KiB
		17	Accepted	1/1	141ms	5684 KiB
		18	Accepted	1/1	61ms	1588 KiB
		19	Accepted	1/1	52ms	1332 KiB