题解 | #小欧的奇数#

判断奇数和偶数的个数是否合法。

#include<bits/stdc++.h>
#define int long long
#define double long double
#define x first
#define y second
using namespace std;
typedef long long LL;
typedef long long ll;
typedef pair<int, int> PII;
const int N = 3e5 + 10;
const int M = 1e3 + 10;
int mod = 1e9 + 7;
int a[N];

void solve() {
    int c1 = 0, c2 = 0;
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++) {
        int x;
        cin >> x;
        if (x % 2) c1++;
        else c2++;
    }
    if (c1 >= 3 || (c1 >= 1 && c2 >= 2)) cout << "YES\n";
    else cout << "NO\n";
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    int _;
    _ = 1;
    //cin>>_;
    while (_--) {
        solve();
    }
}