Submission #1178570

#	Time	Username	Problem	Language	Result	Execution time	Memory
1178570		Moonn	Infinite Race (EGOI24_infiniterace2)	C++20	29 / 100	10 ms	1860 KiB

Main

#pragma GCC optimize("O3")
#include<bits/stdc++.h>
#define ll long long
#define endl "\n"
#define AI ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
using namespace std;
const ll sz=1e6+4;
void solve()
{
    ll n,q,x,ma=0,i,ans=0;
    cin>>n>>q;
    ll sa[n+1]={0};
    for(i=0;i<q;i++)
    {
        cin>>x;
        if(x>0)
        {
            sa[x]++;
            if(sa[x]>1)
            ans++;
        }
        else
        {
            x=abs(x);
            sa[x]=0;
        }
    }
    cout<<ans<<endl;
}
int main()
{
    AI
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    ll t;
    t=1;
    while(t--)
    solve();

}

• Subtask 1: 29 / 29
• Subtask 2: 0 / 34
• Subtask 3: 0 / 22
• Subtask 4: 0 / 15