Slimes

    1#include <bits/stdc++.h>
    2using namespace std;
    3typedef long long ll;
    4const ll INF = 1e17; //❄️
    5#define int long long
    6signed main() {
    7    ios::sync_with_stdio(0); cin.tie(0); 
    8    int n; cin >> n;
    9    vector<int> v(n);
    10    for (int i = 0; i < n; i++) cin >> v[i];
    11    vector<int> psa(n + 1);
    12    for (int i = 1; i <= n; i++) {
    13        psa[i] = psa[i - 1] + v[i - 1];
    14    }
    15    vector<vector<int>> dp(n, vector<int>(n));
    16    for (int len = 2; len <= n; len++) {
    17        for (int l = 0; l + len - 1 < n; l++) {
    18            int r = l + len - 1;
    19            dp[l][r] = INF;
    20            for (int k = l; k < r; k++) {
    21                int cost = dp[l][k] + dp[k + 1][r] + psa[r + 1] - psa[l];
    22                dp[l][r] = min(dp[l][r], cost);
    23            }
    24        }
    25    }
    26    cout << dp[0][n - 1] << '\n';
    27    return 0;
    28}