oj.uz

답안 #1114285

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1114285 2024-11-18T13:25:33 Z ljtunas Sjeckanje (COCI21_sjeckanje) C++14
110 / 110
 613 ms 34952 KB 
#include <bits/stdc++.h>

using namespace std;

#define int long long
#define fi first
#define se second
#define Rep(i, n)  for(int i = 1; i <= n; ++i)
#define For(i, a, b) for(int i = a; i <= b; ++i)
#define Ford(i, a, b) for(int i = a; i >= b; --i)
#define Forv(v, h) for(auto &v : h)
#define Bit(x, i) ((x) >> (i) & 1ll)
#define onbit(x, i) ((x) | (1ll << i))
#define offbit(x, i) ((x) &~ (1ll << i))
#define cnt_bit(x) __builtin_popcountll(x)
#define Log2(x) (63 - __builtin_clzll(x))
#define reset(h, v) (memset(h, v, sizeof(h)))
#define memoryof(v) (sizeof(v) / 1024 / 1024)

#define name "recipe"

using ii  = pair<int, int>;
using ull = unsigned long long;
using db  = long double;
using vi  = vector<int>;
using vvi  = vector<vi>;
using vii  = vector<ii>;

const int dx[] = {0, 0, +1, -1};
const int dy[] = {-1, +1, 0, 0};
const int MAXN = 2e5  + 10;
const int  MOD = 1e9  + 7;
const int   oo = 1e18 + 1;
const int base = 311;

template <class X, class Y> bool maximize(X &a, const Y &b) {
    if(a < b) return a = b, true;
    return false;
}
 
template <class X, class Y> bool minimize(X &a, const Y &b) {
    if(a > b) return a = b, true;
    return false;
}

int n, a[MAXN], q, l[MAXN], r[MAXN], x[MAXN];

void init() {
    cin >> n >> q;
    For(i, 1, n) cin >> a[i];
    For(i, 1, q) cin >> l[i] >> r[i] >> x[i];
}

namespace sub1{
	int b[205], dp[205];
	void SOLVE() {
		Rep(i, n) b[i] = a[i];
		For(t, 1, q) {
			dp[0] = 0;
			Rep(i, n) dp[i] = -oo;
			For(i, l[t], r[t]) b[i] += x[t];
			Rep(i, n) {
				int Max = -oo, Min = +oo;
				Ford(j, i, 1) {
					maximize(Max, b[j]);
					minimize(Min, b[j]);
					maximize(dp[i], dp[j - 1] + Max - Min);
				}
			}
			cout << dp[n] << '\n';
		}
	}
}

namespace sub2{
	int b[3005], dp[3005][2], d[3005];

	void SOLVE() {
		Rep(i, n) b[i] = a[i];
		
		For(t, 1, q) {
			For(i, l[t], r[t]) b[i] += x[t];
			reset(d, 0);
			reset(dp, 0);
			For(i, 2, n) {
				d[i] = b[i] - b[i - 1];
			}
			For(i, 1, n) {
				dp[i][0] = max(dp[i - 1][0], dp[i - 1][1]);
				dp[i][1] = max(dp[i - 1][0], dp[i - 1][1] * (d[i]*d[i-1] >= 0)) + abs(d[i]);
			}
			cout << max(dp[n][0], dp[n][1]) << '\n';
		}
	}
}

namespace sub3{
	int d[MAXN];
	struct DATA{
		int dp[2][2];
	};
	struct SegTree{
		#define left(id)  (id << 1)
		#define right(id) (id << 1 | 1)
		#define mid(l, r) ((l + r) >> 1)
		DATA ST[MAXN * 4];
		void update(int id, int l, int r, int u, int v, int val) {
			if (v < l || r < u || r < l || v < u) return;
			if (l == r) {
				ST[id].dp[1][1] = abs(val);
				return; 
			}
			int mid = mid(l, r);
			update(left(id), l, mid, u, v, val);
			update(right(id), mid + 1, r, u, v, val);
			For(i, 0, 1) For(j, 0, 1) {
				ST[id].dp[i][j] = 0;
				For(a, 0, 1) For(b, 0, 1) {
					if (a == b && a == 1 && d[mid] * d[mid + 1] < 0) continue;
					ST[id].dp[i][j] = max(ST[id].dp[i][j], ST[left(id)].dp[i][a] + ST[right(id)].dp[b][j]);
				}
			}
		}
	} IT;
	void SOLVE() {
		For(i, 2, n) d[i] = a[i] - a[i - 1];
		For(i, 2, n) IT.update(1, 2, n, i, i, d[i]);
		For(t, 1, q) {
			d[l[t]] += x[t];
			d[r[t] + 1] -= x[t];
			IT.update(1, 2, n, l[t], l[t], d[l[t]]);
			IT.update(1, 2, n, r[t] + 1, r[t] + 1, d[r[t] + 1]);
			int ans = -oo;
			maximize(ans, IT.ST[1].dp[0][0]);
			maximize(ans, IT.ST[1].dp[0][1]);
			maximize(ans, IT.ST[1].dp[1][0]);
			maximize(ans, IT.ST[1].dp[1][1]);
			cout << ans << '\n';
		}
	}
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    // freopen(name".inp", "r", stdin);
    // freopen(name".out", "w", stdout);
    //_______________________________
    init();
    // sub2::SOLVE();
    // sub1::SOLVE();
    // sub2::SOLVE();
    sub3::SOLVE();
    cerr << "Time elapsed: " << (1.0 * clock() / CLOCKS_PER_SEC) << " s.\n";
    return 0;
}

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6480 KB Output is correct
2 Correct 2 ms 6480 KB Output is correct
3 Correct 2 ms 6648 KB Output is correct
4 Correct 2 ms 6480 KB Output is correct
5 Correct 2 ms 6480 KB Output is correct
6 Correct 2 ms 6648 KB Output is correct

Subtask #2
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6480 KB Output is correct
2 Correct 2 ms 6480 KB Output is correct
3 Correct 2 ms 6648 KB Output is correct
4 Correct 2 ms 6480 KB Output is correct
5 Correct 2 ms 6480 KB Output is correct
6 Correct 2 ms 6648 KB Output is correct
7 Correct 7 ms 8784 KB Output is correct
8 Correct 13 ms 8872 KB Output is correct
9 Correct 10 ms 8784 KB Output is correct
10 Correct 8 ms 8996 KB Output is correct
11 Correct 7 ms 8784 KB Output is correct
12 Correct 7 ms 8784 KB Output is correct

Subtask #3
55.0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6480 KB Output is correct
2 Correct 2 ms 6480 KB Output is correct
3 Correct 2 ms 6648 KB Output is correct
4 Correct 2 ms 6480 KB Output is correct
5 Correct 2 ms 6480 KB Output is correct
6 Correct 2 ms 6648 KB Output is correct
7 Correct 7 ms 8784 KB Output is correct
8 Correct 13 ms 8872 KB Output is correct
9 Correct 10 ms 8784 KB Output is correct
10 Correct 8 ms 8996 KB Output is correct
11 Correct 7 ms 8784 KB Output is correct
12 Correct 7 ms 8784 KB Output is correct
13 Correct 613 ms 34152 KB Output is correct
14 Correct 585 ms 34120 KB Output is correct
15 Correct 560 ms 34120 KB Output is correct
16 Correct 562 ms 34172 KB Output is correct
17 Correct 590 ms 34120 KB Output is correct
18 Correct 500 ms 34952 KB Output is correct