Submission #225180

#TimeUsernameProblemLanguageResultExecution timeMemory
225180VimmerSimfonija (COCI19_simfonija)C++14
55 / 110
43 ms2740 KiB
#include <bits/stdc++.h>

//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")

#define F first
#define S second
#define sz(x) int(x.size())
#define pb push_back
#define N 200005
#define MOD ll(998244353)

using namespace std;

typedef long long ll;

typedef long double ld;




int main()
{

    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    ll n, k;

    cin >> n >> k;

    ll a[n], b[n];

    for (ll i = 0; i < n; i++) cin >> a[i];

    for (ll i = 0; i < n; i++) cin >> b[i];

    vector <ll> g(n);

    for (ll i = 0; i < n; i++) g[i] = a[i] - b[i];

    sort(g.begin(), g.end());

    ll mid = (n - k) / 2;

    ll x = -g[mid];

    ll ans = 0;

    for (ll i = 0; i < n - k; i++) ans += abs(g[i] + x);

    ll sum = 0;

    x = -g[mid + k];

    for (ll i = k; i < n; i++) sum += abs(g[i] + x);

    cout << min(sum, ans);
}
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