Submission #344701

#	Time	Username	Problem	Language	Result	Execution time	Memory
344701		koketsu	Bigger segments (IZhO19_segments)	C++14	100 / 100	96 ms	13548 KiB

segments

#include <bits/stdc++.h>
#define pb push_back
#define LL long long
#define Kultivator ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

using namespace std;

const LL Mxn = 1e6 + 7;
const LL Mod = 1e9 + 7;
const LL Inf = 1e14 + 7;

LL N, Pref[Mxn], Mx[Mxn], Dp[Mxn], A;

int main() {
    Kultivator;
    cin >> N;
    for(int i = 1; i <= N; i++){
        cin >> A;
        Pref[i] = (Pref[i - 1] + A);
    }
    for(int i = 1; i <= N; i++){
        Mx[i] = max(Mx[i], Mx[i - 1]);
        Dp[i] = Dp[Mx[i]] + 1;
        int ind = upper_bound(Pref, Pref + N + 1, (2 * Pref[i]) - Pref[Mx[i]] - 1) - Pref;
        Mx[ind] = max(Mx[ind], (LL)i);
        //cout << Dp[i] << ' ';
    }
    cout << Dp[N];
}

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