Submission #1363256

#	Time	Username	Problem	Language	Result	Execution time	Memory
1363256		husseinjuanda	Gift Boxes (EGOI25_giftboxes)	C++20	100 / 100	31 ms	15948 KiB

Main

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

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t, n; cin >> t >> n;
    vector<int> x(n);
    vector<int> mx(t);
    for(int i = 0; i < n; i++){
        cin >> x[i];
        mx[x[i]] = i;
    }
    int s = 0;
    vector<int> freq(t);
    for(int i = n-1; i >= 0; i--){
        freq[x[i]]++;
        if(freq[x[i]] == 2) break;
        s = i;
    }
    int m = s-1;
    int mn = 1e18;
    int l, r;
    vector<int> f(t);
    for(int i = 0; i < n; i++){
        if(mn > m - i + 1){
            mn = m-i+1;
            l = i;
            r = m;
        }
        f[x[i]]++;
        if(f[x[i]] > 1) break;
        m = max(mx[x[i]], m);
    }
    cout << l << " " << r << endl;
    return 0;
}

• Subtask 0: 0 / 0
• Subtask 1: 8 / 8
• Subtask 2: 11 / 11
• Subtask 3: 14 / 14
• Subtask 4: 21 / 21
• Subtask 5: 22 / 22
• Subtask 6: 24 / 24