Submission #1189064

#	Time	Username	Problem	Language	Result	Execution time	Memory
1189064		another	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	65 ms	9796 KiB

Main

#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
#define ll long long
#define ld long double
#define pll pair<ll,ll>
#define pb push_back
ll T=1,n,nq,x,y,ind,t,dp[5000099][3],k,mx,rs=0,c,pr,lft,a[2000009];
string s;
//map<ll,ll>ma;

void slv()
{
    cin>>n>>nq;
    pr=0;lft=0;rs=0;
    ll t2=0,t1=0;
    set<ll>bf;
    while(nq--)
    {
        cin>>x;
        if(x<0)
        {
            x=abs(x);
            bf.erase(x);
        }
        else 
        {
            if(bf.count(x))
            {
                rs++;
                bf.clear();
                bf.insert(x);
            }
            else bf.insert(x);
        }
    }
    cout<<rs<<endl;
}
int main() {
    //freopen("feast.in", "r", stdin);
	//freopen("feast.out", "w", stdout);
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    //cin>>T;
    while(T--)
        slv();
    return 0;
}

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