Submission #957778

#	Time	Username	Problem	Language	Result	Execution time	Memory
957778		I_am_Polish_Girl	Bigger segments (IZhO19_segments)	C++14	0 / 100	1 ms	348 KiB

segments

#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <set>
#include <unordered_map>
#include <unordered_set>
#include <stack>
#include <queue>
#include <cmath>
#include <random>
#include <chrono>

using namespace std;

#define int long long

int log_ = 10;
int inf = 1000000000000000000;
int mod = 998244353;




signed main()
{
    ios_base::sync_with_stdio();
    cin.tie(0);
    cout.tie(0);

    int n;
    cin >> n;

    vector <int> a(n);
    vector <int> pref(n);

    vector <int> dp(n);
    vector <int> col(n);

    int pr = 0;
    for (int i = 0; i < n; i++)
    {
        cin >> a[i];

        pr += a[i];

        pref[i] = pr;

        dp[i] = pref[i];
        col[i] = 1;
    }

    pref.push_back(inf);

    for (int i = 0; i < n; i++)
    {
        int x = pref[i];

        int ind = lower_bound(pref.begin(), pref.end(), x + dp[i]) - pref.begin();

        if (ind == n)
            continue;

        if (dp[ind] > (pref[ind] - pref[i]))
            dp[ind] = (pref[ind] - pref[i]);

        if (dp[ind] == (pref[ind] - pref[i]))
            col[ind] = max(col[ind], col[i] + 1);
    }

    cout << col[n - 1];
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 14
• Subtask 3: 0 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27