Dr. Henri and Ionization

    1#include <bits/stdc++.h>
    2using namespace std;
    3using ll = long long;
    4const int inf = 1e9;
    5const long long INF = 1e17; //❄️
    6int main() {
    7    ios::sync_with_stdio(0); cin.tie(0); 
    8    int n; cin >> n;
    9    vector<int> a(n), b(n);
    10    for (int i = 0; i < n; i++) cin >> a[i];
    11    int ans = 0, cnt = 0;
    12    for (int i = 0; i < n; i++) {
    13        cin >> b[i];
    14        if (a[i] < b[i]) ans += a[i];
    15        else {
    16            ans += b[i];
    17            cnt++;
    18        }
    19    }
    20    if (cnt & 1) {
    21        int mn = inf;
    22        for (int i = 0; i < n; i++) {
    23            mn = min(mn, abs(a[i] - b[i]));
    24        }
    25        ans += mn;
    26    }
    27    cout << ans << '\n';
    28    return 0;
    29}