Submission #1234916

#	Time	Username	Problem	Language	Result	Execution time	Memory
1234916		p4r4d0_x	Infinite Race (EGOI24_infiniterace2)	C++20	0 / 100	7 ms	3400 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back

void solve(){
    ll n, x, q; cin >> n >> q;
    map<ll, ll> m;
    ll ans = 0;
    vector<ll> a(q);
    for(int i = 0; i < q; ++i){
        cin >> a[i];
    }
    m[a[0]]++;
    a.pb(-1);
    for(int i = 1; i <= q; ++i){
        if(a[i] != a[i - 1]){
            ans += m[a[i - 1]] - 1;
            m[a[i - 1]] = 0;
        }
        m[a[i]]++;
    }
    cout << ans << "\n";
}


int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL), cout.tie(NULL);
    solve();
}

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