Submission #1769346

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Source Code Expand

#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define INF 1<<30
#define LINF 1LL<<60

int main(void) {
    cin.tie(0); ios::sync_with_stdio(false);
    ll N; cin >> N;
    vector<ll> A(N);
    for(auto& in:A){ cin >> in; in = abs(in);}
    ll odd_cnt,even_cnt;
    odd_cnt = even_cnt = 0;
    for(auto a:A){
        if(a%2 == 0){
            even_cnt++;
        }else{
            odd_cnt++;
        }
    }
    if(odd_cnt%2 == 1){
        cout << "NO" << endl;
        return 0;
    }
    even_cnt += odd_cnt/2;
    if(even_cnt == 1){
        cout << "YES" << endl;
        return 0;
    }
    if(even_cnt%2 == 1){
        cout << "NO" << endl;
        return 0;
    }
    cout << "YES" << endl;
    return 0;
}

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