Submission #1355933

#	Time	Username	Problem	Language	Result	Execution time	Memory
1355933		mahriban	Gift Boxes (EGOI25_giftboxes)	C++20	19 / 100	68 ms	2848 KiB

Main

#include<bits/stdc++.h>
using namespace std;
bool vis[500009];
int a[500009];
int main(){
    int n, m;
    cin >> n >> m;
    int l = 500009, r = -1, ok = 0;
    for (int i = 1; i <= m; i ++){
        cin >> a[i];
        if (vis[a[i]]){l = min(l, i - 1);ok = 1;}
        if (!ok)vis[a[i]] = 1;
    }
    for (int i = m; i >= 0; i --){
        if (vis[a[i]]){r = max(r, i - 1);break;}
        vis[a[i]] = 1;
    }
    cout << l << ' ' << r << endl;
}

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