Submission #837990

#	Time	Username	Problem	Language	Result	Execution time	Memory
837990		abysmal	Sjeckanje (COCI21_sjeckanje)	C++14	0 / 110	1 ms	212 KiB

Main

#include<iostream>
#include<stdio.h>
#include<stdint.h>
#include<iomanip>
#include<algorithm>
#include<utility>
#include<vector>
#include<stack>
#include<queue>
#include<set>
#include<map>
#include<deque>
#include<math.h>
#include<assert.h>
#include<string.h>

using namespace std;

const int64_t INF = (int64_t) 1e18 + 100;
const int64_t mINF = (int64_t) 1e6 * 2 + 100;
const int64_t MOD = 1e9 + 7;
const int64_t MOD2 = 998244353;
const int nbit = 31;
const int ndig = 10;
const int nchar = 26;
const int D = 4;
int dr[D] = {-1, 0, 1, 0};
int dc[D] = {0, 1, 0, -1};
const int Dk = 8;
int drk[Dk] = {2, 2, -2, -2, 1, 1, -1, -1};
int dck[Dk] = {1, -1, 1, -1, 2, -2, 2, -2};

struct Solution
{
    int n;
    int q;
    vector<int> a;
    vector<int> d;
    Solution() {}

    void solve()
    {
        cin >> n >> q;
        a.resize(n + 1, 0);
        d.resize(n + 1, 0);
        for(int i = 1; i <= n; i++)
        {
            cin >> a[i];
        }

        for(int i = 1; i <= n; i++)
        {
            d[i] = a[i] - a[i - 1];
        }

        for(int i = 0; i < q; i++)
        {
            int l; int r; int x;
            cin >> l >> r >> x;
            d[l] += x;
            if(r + 1 <= n) d[r + 1] -= x;

            vector<int> dp(n + 1, 0);
            for(int j = 1; j <= n; j++)
            {
                dp[j] = dp[j - 1]; // new segment start at j
                if(j >= 2) dp[j] = max(dp[j], dp[j - 2] + Abs(d[j])); // new segment start at j - 1
                if(1LL * d[j - 1] * d[j] > 0) dp[j] = max(dp[j], dp[j - 1] + Abs(d[j])); // continue segment
            }

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

    void modadd(int& t1, int t2)
    {
        t1 += t2;
        if(t1 >= MOD) t1-= MOD;
        return;
    }

    void modsub(int& t1, int t2)
    {
        t1 -= t2;
        if(t1 < 0) t1 += MOD;
        return;
    }

    int modmul(int t1, int t2)
    {
        int64_t res = 1LL * t1 * t2;
        return res % MOD;
    }

    int Abs(int tmp)
    {
        if(tmp < 0) return -tmp;
        return tmp;
    }

    int MASK(int j)
    {
        return (1 << j);
    }

    int BIT(int tmp, int j)
    {
        int x = tmp & MASK(j);
        if(x != 0) return 1;
        return 0;
    }
};

void __setup()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);

//    freopen("in.txt", "r", stdin);
//    freopen("out.txt", "w", stdout);
}

int main()
{
    __setup();

    int t = 1;
//    cin >> t;
    for(int i = 1; i <= t; i++)
    {
        Solution().solve();
    }
    return 0;
}

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