func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, m, val[105], c[105][105], pref[105][105], calc[105][105],       dp[105][10005];   int main() {     ios::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     cin >> n >> m;     for (long long i = 1; i <= n; ++i) {       cin >> val[i];       for (long long j = 1; j <= val[i]; ++j)         cin >> c[i][j], pref[i][j] = pref[i][j - 1] + c[i][j];     }     for (long long i = 1; i <= n; ++i)       for (long long j = 1; j <= min(m, val[i]); ++j)         for (long long k = 0; k <= j; ++k)           calc[i][j] = max(calc[i][j], pref[i][k] + pref[i][val[i]] -                                            pref[i][val[i] - (j - k)]);     long long tot = 0;     for (long long i = 1; i <= n; ++i) {       tot += val[i];       for (long long j = 1; j <= min(tot, m); ++j) {         for (long long k = 0; k <= min(j, val[i]); ++k) {           dp[i][j] = max(dp[i][j], dp[i - 1][j - k] + calc[i][k]);         }       }     }     cout << dp[n][m] << endl;   }   