Submission #1148205

#	Time	Username	Problem	Language	Result	Execution time	Memory
1148205		AbdullahIshfaq	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	88 ms	12872 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define MOD 998244353
void solve(){
    ll n, q, ans = 0, x;
    cin >> n >> q;
    map<ll,ll> mp;
    for(int i = 0; i < q; i ++){
        cin >> x;
        if(x > 0){
            if(mp.find(x) != mp.end() and mp[x] == ans){
                ans++;
            }
            mp[x] = ans;
        }
        else{
            if(mp.find(-x) != mp.end()){
                mp.extract(-x);
            }
        }
    }
    cout << ans << '\n';
}
int main() {
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int tests = 1;
	// cin >> tests;
	for(int i = 1; i <= tests; i ++)
		solve();
}

• Subtask 1: 29 / 29
• Subtask 2: 34 / 34
• Subtask 3: 22 / 22
• Subtask 4: 15 / 15