Submission #513861

#	Time	Username	Problem	Language	Result	Execution time	Memory
513861		blue	Sjeckanje (COCI21_sjeckanje)	C++17	55 / 110	2045 ms	5632 KiB

Main

#include <iostream>
using namespace std;

using ll = long long;

ll* a;

bool cmp(int i, int j)
{
    if(a[i] != a[j]) return a[i] < a[j];
    else return i < j;
}

const ll INF = 1'000'000'000'000'000'000LL;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n, q;
    cin >> n >> q;

    a = new ll[1+n+1];
    for(int i = 1; i <= n; i++) cin >> a[i];
    a[0] = a[n+1] = 0;

    for(int j = 1; j <= q; j++)
    {
        ll l, r, x;
        cin >> l >> r >> x;

        for(int i = l; i <= r; i++)
            a[i] += x;

        ll dp[1+n];
        dp[0] = 0;

        ll mx1 = -INF, mx2 = -INF;

        for(int i = 1; i <= n; i++)
        {
            mx1 = max(mx1, dp[i-1] - a[i]);
            mx2 = max(mx2, dp[i-1] + a[i]);

            dp[i] = max(mx1 + a[i], mx2 - a[i]);
        }

        cout << dp[n] << '\n';
    }
}

• Subtask 1: 15 / 15
• Subtask 2: 40 / 40
• Subtask 3: 0 / 55