Submission #549977

#	Time	Username	Problem	Language	Result	Execution time	Memory
549977		Duy_e	Split the sequence (APIO14_sequence)	C++14	11 / 100	133 ms	131072 KiB

sequence

/*
**  TASK: 
**  LINK: 
*/

#include <bits/stdc++.h>
#define ll long long
#define pii pair<ll, ll>
#define st first
#define nd second
#define file "test"
using namespace std;
const long long INF = 1e18;
const long long N = 200 + 5;

ll n, a[N], k, dp[N][N][N], f[N], trace[N][N][N], num[N][N][N];

ll cal(int l, int r, int cur) {
    if (l >= r || cur == 0) return 0;
    if (dp[l][r][cur] != -1) return dp[l][r][cur];
    ll &ans = dp[l][r][cur];
    ans = 0;

    for (int i = l; i <= r; i ++) {
        for (int j = 0; j <= i - l; j ++)
            if (j < cur && r - i > cur - j - 1) {
                ll tmp = (f[i] - f[l - 1]) * (f[r] - f[i]) + cal(l, i, j) + cal(i + 1, r, cur - j - 1);
                if (tmp > ans)
                    trace[l][r][cur] = i, num[l][r][cur] = j, ans = tmp;
            }
    }

    return ans;
}

void go(int l, int r, int cur) {
    if (trace[l][r][cur] == 0 || cur == 0) return;
    cout << trace[l][r][cur] << ' ';
    go(l, trace[l][r][cur], num[l][r][cur]);
    go(trace[l][r][cur] + 1, r, cur - num[l][r][cur] - 1);
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    // #ifndef ONLINE_JUDGE
    //     freopen(file".inp", "r", stdin); freopen(file".out", "w", stdout);
    // #endif
    
    cin >> n >> k;
    for (int i = 1; i <= n; i ++)
        cin >> a[i], f[i] = f[i - 1] + a[i];

    memset(dp, -1, sizeof dp);

    cout << cal(1, n, k) << '\n';
    go(1, n, k);

    return 0;
}    
/**  /\_/\
*   (= ._.)
*   / >🍵 \>🍮
**/

Compilation message (stderr)

sequence.cpp:61:9: warning: "/*" within comment [-Wcomment]
   61 | /**  /\_/\
      |

• Subtask 1: 0 / 11
• Subtask 2: 11 / 11
• Subtask 3: 0 / 11
• Subtask 4: 0 / 17
• Subtask 5: 0 / 21
• Subtask 6: 0 / 29