func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long mx = 19;   const long long mx1 = 262150;   long long s[mx];   long long n, m, k;   long long extra[mx][mx];   long long dp[mx][mx1];   long long solve(long long prev, long long bitmask, long long m) {     if (m == 0) return 0;     if (dp[prev][bitmask] != -1) return dp[prev][bitmask];     long long ans = INT_MIN;     for (long long j = 0; j < mx; j++) {       if (bitmask & (1 << j))         ans = max(ans, extra[prev][j + 1] + s[j + 1] +                            solve(j + 1, bitmask ^ (1 << j), m - 1));     }     return dp[prev][bitmask] = ans;   }   signed main() {     cin >> n >> m >> k;     for (long long i = 1; i <= n; i++) cin >> s[i];     long long a, b, c;     memset(extra, 0, sizeof(extra));     for (long long i = 0; i < k; i++) {       cin >> a >> b >> c;       extra[a][b] = c;     }     long long bitmask = (1 << n) - 1;     long long prev = 0;     memset(dp, -1, sizeof(dp));     cout << solve(prev, bitmask, m) <<   n ;     return 0;   }   