Submission #1148227

#	Time	Username	Problem	Language	Result	Execution time	Memory
1148227		hynmj	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	61 ms	11336 KiB

Main

//~~~~~~~~~~~~~MJ®™~~~~~~~~~~~~~
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx")
#define rep1(n) for(ll i=0; i<(ll)(n); ++i)
#define rep2(i,n) for(ll i=0; i<(ll)(n); ++i)
#define rep3(i,a,b) for(ll i=(ll)(a); i<(ll)(b); ++i)
#define rep4(i,a,b,c) for(ll i=(ll)(a); i<(ll)(b); i+=(c))
#define cut4(a,b,c,d,e,...) e
#define rep(...) cut4(__VA_ARGS__,rep4,rep3,rep2,rep1)(__VA_ARGS__)
#define per1(n) for(ll i=((ll)n)-1; i>=0; --i)
#define per2(i,n) for(ll i=((ll)n)-1; i>=0; --i)
#define per3(i,a,b) for(ll i=((ll)a)-1; i>=(ll)(b); --i)
#define per4(i,a,b,c) for(ll i=((ll)a)-1; i>=(ll)(b); i-=(c))
#define per(...) cut4(__VA_ARGS__,per4,per3,per2,per1)(__VA_ARGS__)
#define ll long long
#define ln cout<<endl
#define int long long
#define Code ios_base::sync_with_stdio(0);
#define by cin.tie(NULL);
#define Hayan cout.tie(NULL);
#define append push_back
#define all(x) (x).begin(),(x).end()
#define allr(x) (x).rbegin(),(x).rend()
#define vi vector<int>
#define ret(x) {cout<<x;return;}
#define ui map<int,int>
#define pi pair<int,int>
#define ff first
#define ss second
using namespace std;
template <typename T> using v = vector<T>;
const int INF = 1e18, MOD = 1e9+7, N = 2e5+7;
bool back[N];
int p[N];
void solve()
{
    int n, k, e, m;
    int ans=0;
    cin >> n >> m;
    vi a(m);
    rep(m)
    {
    	cin >> e;a[i]=e;
    }
    set<int> front;
    // rep(n)front.insert(i+1);
    int answer=0;
    for (int i=0;i<m;i++)
    {
        if (a[i]>0)
        {
            if (front.count(a[i]))
            {
                ans++;
                answer= max({ans-1,1ll,answer});
                front.clear();
            }
            
            front.insert(a[i]);
        }
        else 
        {
            front.extract(-a[i]);
        }        
    }






     cout << ans;
    // cout << a.size();
    // for (auto i: a){cout << i << " ";}
}
signed main(){
    Code by Hayan
    int ans=1;
    //cout<<setprecision(1000);
    // cin>>ans;
    rep(ans){
        // cout << "Case #" << i+1 << ": ";
        solve();ln;}}

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