제출 #950286

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
950286		vjudge1	Sjeckanje (COCI21_sjeckanje)	C++17	55 / 110	2048 ms	8056 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define all(a) a.begin(), a.end()
#define int long long



int f(vector<int> &a){
    int n = a.size();
    vector<int> dp(n);
    dp[0] = 0;
    int minus = -a[0], plus = a[0];
    for(int i = 1;i < n; i++){
        minus = max(dp[i-1] - a[i], minus);
        plus = max(dp[i-1] + a[i], plus);
        dp[i] = max({dp[i-1], plus - a[i], minus + a[i]});
    }
    return *max_element(all(dp));
}


signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    int n, q; cin >> n >> q;
    vector<int> a(n);
    for(auto &e : a) cin >> e;
    while(q--){
        int l, r, x; cin >> l >> r >> x;
        l--, r--;
        vector<int> v;
        for(int i = 0;i < n; i++){
            if(l <= i && r >= i) a[i]+= x;
            if(v.size() >= 2 && a[i] == v[v.size()-1] && a[i] == v[v.size()-2]){
                continue;
            }
            v.push_back(a[i]);
        }
       
        cout << f(v) << '\n';
    }
    return 0;
}

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