Submission #1339364

#	Time	Username	Problem	Language	Result	Execution time	Memory
1339364		sally	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	106 ms	9784 KiB

Main

#include<iostream>
#include<set>
using namespace std;
int main() {
    int N, Q;
    cin>>N>>Q;
    int ans = 0;
    set<int> st;
    while(Q--) {
        int k;
        cin>>k;
        if(k<0) {
            if(st.find(-k)!=st.end()) st.erase(-k);
            continue;
        }
        else if(st.find(k)!=st.end()) {
            ans++;
            st.clear();
        }
        st.insert(k);
    }
    cout<<ans;
}

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