Submission #950045

#	Time	Username	Problem	Language	Result	Execution time	Memory
950045		vjudge1	Sjeckanje (COCI21_sjeckanje)	C++17	0 / 110	1 ms	348 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define size(x) (int)x.size()
#define all(x) x.begin(), x.end()

template<class S, class T>
bool chmin(S& a, const T& b) {
  return a > b ? (a = b) == b : false;
}
template<class S, class T>
bool chmax(S& a, const T& b) {
  return a < b ? (a = b) == b : false;
}

signed main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int n, q; cin >> n >> q;
  int a[n + 1];
  for (int i = 1; i <= n; ++i) {
    cin >> a[i];
  }
  while (q--) {
    int l, r, x;
    cin >> l >> r >> x;
    for (int i = l; i <= r; ++i) {
      a[i] += x;
    }
    vector<int> dp(n + 1, 0);
    int max_b = a[1], max_s = -a[1];
    for (int i = 2; i <= n; ++i) {
      dp[i] = max(max_s + a[i], max_b - a[i]);
      chmax(max_s, dp[i - 1] - a[i]);
      chmax(max_b, dp[i - 1] + a[i]);
    }
    cout << dp[n] << '\n';
  }
}

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