Submission #633964

#	Time	Username	Problem	Language	Result	Execution time	Memory
633964		vovamr	Sjeckanje (COCI21_sjeckanje)	C++17	0 / 110	1 ms	328 KiB

Main

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fi first
#define se second
#define ll long long
#define ld long double
#define sz(x) ((int)(x).size())
#define all(x) 	(x).begin(), (x).end()
#define pb push_back
#define mpp make_pair
#define ve vector
using namespace std;
using namespace __gnu_pbds;
template<class T> using oset = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
const ll inf = 1e18; const int iinf = 1e9;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template <typename T> inline bool chmin(T& a, T b) { return (a > b ? a = b, 1 : 0); }
template <typename T> inline bool chmax(T& a, T b) { return (a < b ? a = b, 1 : 0); }

inline void solve() {
	int n, q;
	cin >> n >> q;
	ve<ll> a(n);
	for (auto &i : a) cin >> i;

	while (q--) {
		int l, r, x;
		cin >> l >> r >> x;
		for (int i = l - 1; i < r; ++i) a[i] += x;

		ll ans = 0;

		if (n & 1 ^ 1) {
			for (int i = 1; i < n; ++++i) {
				ans += max(a[i], a[i - 1]) - min(a[i], a[i - 1]);
			}
		}
		else {
			for (int pos = 0; pos + 2 < n; ++++pos) {
				ll res = max({a[pos], a[pos + 1], a[pos + 2]}) -
						min({a[pos], a[pos + 1], a[pos + 2]});
				for (int i = 1; i < pos; ++++i) res += max(a[i], a[i - 1]) - min(a[i], a[i - 1]);
				for (int i = pos + 4; i < n; ++++i) res += max(a[i], a[i - 1]) - min(a[i], a[i - 1]);
				chmax(ans, res);
			}
		}

		cout << ans << '\n';
	}
}

signed main() {
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	int q = 1; // cin >> q;
	while (q--) solve();
	cerr << fixed << setprecision(3) << "Time execution: " << (double)clock() / CLOCKS_PER_SEC << endl;
}

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:36:9: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   36 |   if (n & 1 ^ 1) {
      |       ~~^~~

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