Submission #1003645

#	Time	Username	Problem	Language	Result	Execution time	Memory
1003645		ThegeekKnight16	Cigle (COI21_cigle)	C++17	100 / 100	145 ms	98560 KiB

cigle

#include <bits/stdc++.h>
using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int N; cin >> N;
    vector<int> v(N+1);
    for (int i = 1; i <= N; i++) cin >> v[i]; v[0] = 0x3f3f3f3f;
    vector<vector<int>> dp(N+1, vector<int>(N+1));
    for (int l = 2; l <= N; l++)
    {
        vector<int> prefdp(N+1);
        for (int k = 1; k < l; k++) prefdp[k] = max(prefdp[k-1], dp[k][l-1]);

        // cerr << "l: " << l << '\n';
        int sumL = v[l-1], sumR = 0, p = l-1, inters = 0, mSuf = 0;
        for (int r = l; r <= N; r++)
        {
            dp[l][r] = max(prefdp[p] + inters, mSuf);
            sumR += v[r];
            while (p > 1 && sumL <= sumR)
            {
                mSuf = max(mSuf, dp[p][l-1] + inters);
                if (sumL == sumR) inters++;
                sumL += v[--p];
            }

            // cerr << dp[l][r] << " ";
        }
        // cerr << '\n';
    }


    int resp = 0;
    for (int i = 1; i <= N; i++) resp = max(resp, dp[i][N]);
    cout << resp << '\n';
}

Compilation message (stderr)

cigle.cpp: In function 'int main()':
cigle.cpp:10:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   10 |     for (int i = 1; i <= N; i++) cin >> v[i]; v[0] = 0x3f3f3f3f;
      |     ^~~
cigle.cpp:10:47: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   10 |     for (int i = 1; i <= N; i++) cin >> v[i]; v[0] = 0x3f3f3f3f;
      |                                               ^

• Subtask 1: 9 / 9
• Subtask 2: 11 / 11
• Subtask 3: 13 / 13
• Subtask 4: 15 / 15
• Subtask 5: 52 / 52