Submission #1114384

#	Time	Username	Problem	Language	Result	Execution time	Memory
1114384		vjudge1	Bigger segments (IZhO19_segments)	C++17	0 / 100	1 ms	508 KiB

segments

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

signed main()
{
    int n; cin >> n;
    vector<int> a(n + 1), pref(n + 1);
    for (int i = 1;  i<= n; i++){
        cin >> a[i];
        pref[i] = pref[i - 1] + a[i];
    }
    vector<pair<int, int>> dp(n + 1);
    dp[1] = {1, a[1]};
    for (int i = 2; i <= n; i++){
        int ini = 1, fin = i;
        while(ini < fin){
            int m = (ini + fin) / 2;
            if (dp[m].second <= pref[i]- pref[m]){
                ini = m + 1;
            }else fin = m;
        }
        ini--;
        int sum = pref[i] - pref[ini];
        dp[i] = {dp[ini].first + 1, sum};
    }
    cout << dp[n].first << endl;
}

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