func_code_string: #include <bits/stdc++.h>   using namespace std;   int N, K;   int a[2210], b[2210];   int cnt[2210];   long long func(void) {     int i, j = N;     int aans = -1, bans = -1, bid = -1;     long long best = (1ll << 60);     for (i = N - 1; i >= 0; i--) {       while (j > i || (j > 0 && cnt[j - 1] > 0)) {         j--;         if (b[j] > 0 && (bid == -1 || b[j] < b[bid])) bid = j;       }       if (a[i] > 0 && bid != -1 && a[i] + b[bid] < best) {         best = a[i] + b[bid];         aans = i;         bans = bid;       }     }     if (aans < bans) {       for (i = aans; i < bans; i++) cnt[i]++;     } else {       for (i = aans - 1; i >= bans; i--) cnt[i]--;     }     a[aans] = b[bans] = 0;     return best;   }   int main(void) {     int i;     cin >> N >> K;     for ((i) = 0; (i) < (int)(N); (i)++) cin >> a[i];     for ((i) = 0; (i) < (int)(N); (i)++) cin >> b[i];     long long ans = 0;     for ((i) = 0; (i) < (int)(K); (i)++) ans += func();     cout << ans << endl;     return 0;   }   