Submission #1141252

#	Time	Username	Problem	Language	Result	Execution time	Memory
1141252		Choco	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	25 ms	8292 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define Study ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define ll long long
#define ull unsigned long long
#define pb push_back
#define ff first 
#define ss second
#define ins insert
#define all(x) x.begin(),x.end()
#define fori(x,y,z) for(ll x=y;x<=z;x++)
const ll INF=1e9;
const ll sz=2e5;
const ll mod=1e9+7;
vector<ll>Graph[sz+10];
vector<ll>removed(sz+10,0);
vector<ll>subs(sz+10,0);
void work(){
    ll n;
    cin>>n;
    ll q;
    cin>>q;
    vector<bool>idk(n+10,0);
    ll cnt=0;
    ll ind=0;
    while(q--){
        ll x;
        cin>>x;
        if(x<0){
            x=abs(x);
            idk[x]=0;
        }
        else if(x>0){
            //cout<<ind<<endl;
            if(idk[x]){
                cnt++;
                idk.assign(n+10,0);
            }
            idk[x]=1;
        }
        //ind++;
    }
    cout<<cnt;
}
int main(){
    Study;
    ll t=1;
    //cin>>t;
    while(t--){
        work();
    }
}

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