Submission #1099352

#	Time	Username	Problem	Language	Result	Execution time	Memory
1099352		dmn223	Infinite Race (EGOI24_infiniterace2)	C++14	100 / 100	95 ms	11052 KiB

Main

#include <bits/stdc++.h>
using namespace std;
map<int,int>m;
int n, q, x, r;
bool a[200001], b[200001];
int main()
{
    cin >> n >> q;
    set<int> st;
    int ind =0;
    for(int i=1;i<=q;i++)
    {
        int x;
        cin>>x;
        if(x>0)
        {
            if(st.find(x)!=st.end())
            {
                ind++;
                st.clear();
                st.insert(x);
            }
            else
                st.insert(x);
        }
        else
        {
            st.erase(-x);
        }
    }
    cout <<ind;
    return 0;
}

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