#include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     vector<int> vec(n);     for (int i = 0; i < n; ++i) cin >> vec[i];     int sum = accumulate(vec.begin(), vec.end(), 0);     if ((sum / 100) % 2 != 0) {       cout <<  NO n ;       return 0;     }     sum /= 2;     int num_one = count(vec.begin(), vec.end(), 100);     int num_two = count(vec.begin(), vec.end(), 200);     int curr = 0;     while (curr <= sum && num_two > 0) {       curr += 200;       num_two--;     }     if (curr == sum) {       cout <<  YES n ;       return 0;     }     if (curr > sum) curr -= 200;     while (curr != sum && num_one > 0) {       curr += 100;       num_one--;     }     if (curr == sum)       cout <<  YES n ;     else       cout <<  NO n ;   }   