oj.uz

Submission #940102

# Submission time Handle Problem Language Result Execution time Memory
940102 2024-03-07T05:38:14 Z viwlesxq Global Warming (CEOI18_glo) C++17
55 / 100
 1134 ms 219676 KB 
#include <bits/stdc++.h>
using namespace std;
//#define int long long
#define all(x) x.begin(), x.end()
#define size(x) (int)x.size()

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;
}

struct PST {
    int n, sz, cnt;
    vector<int> L, R, root, t, a;
    void construct(int n, vector<int> arr) {
        this -> n = n;
        a = arr, sz = 0, cnt = 1;
        L.assign(30 * n, 0), R.assign(30 * n, 0);
        root.assign(30 * n, 0), t.assign(30 * n, 0);
        root[1] = build(1, n);
    }
    int build(int tl, int tr) {
        int v = ++sz;
        if (tl == tr) {
            t[v] = a[tl];
            return v;
        }
        int tm = (tl + tr) >> 1;
        L[v] = build(tl, tm);
        R[v] = build(tm + 1, tr);
        t[v] = max(t[L[v]], t[R[v]]);
        return v;
    }
    int upd(int v, int tl, int tr, int i, int x) {
        int nv = ++sz;
        L[nv] = L[v];
        R[nv] = R[v];
        if (tl == tr) {
            t[nv] = x;
            return nv;
        }
        int tm = (tl + tr) >> 1;
        if (i <= tm) {
            L[nv] = upd(L[nv], tl, tm, i, x);
        } else {
            R[nv] = upd(R[nv], tm + 1, tr, i, x);
        }
        t[nv] = max(t[L[nv]], t[R[nv]]);
        return nv;
    } void upd(int id, int i, int x) {
        root[id] = upd(root[id], 1, n, i, x);
    }
    int get(int v, int tl, int tr, int l, int r) {
        if (tl > r || tr < l) {
            return 0ll;
        }
        if (tl >= l && tr <= r) {
            return t[v];
        }
        int tm = (tl + tr) >> 1;
        return max(get(L[v], tl, tm, l, r), get(R[v], tm + 1, tr, l, r));
    } int get(int id, int l) {
		if (l > n) return 0ll;
        return get(root[id], 1, n, l, n);
    }
    void copy(int id) {
        root[++cnt] = root[id];
    }
};

struct segtree {
	int n;
	vector<int> t;
	void construct(int n) {
		this -> n = n;
		t.assign(4 * n + 4, 0);
	}
	void upd(int v, int tl, int tr, int i, int delta) {
		if (tl == tr) {
			t[v] = delta;
			return;
		}
		int tm = (tl + tr) / 2;
		if (tm >= i) upd(2 * v, tl, tm, i, delta);
		else upd(2 * v + 1, tm + 1, tr, i, delta);
		t[v] = max(t[2 * v], t[2 * v + 1]);
	} void upd(int i, int delta) {
		upd(1, 1, n, i, delta);
	}
	int get(int v, int tl, int tr, int l, int r) {
		if (tl > r || tr < l) return 0ll;
		if (tl >= l && tr <= r) return t[v];
		int tm = (tl + tr) / 2;
		return max(get(2 * v, tl, tm, l, r), get(2 * v + 1, tm + 1, tr, l, r));
	} int get(int l, int r) {
		if (l > r) return 0ll;
		return get(1, 1, n, l, r);
	}
};

PST pst;
segtree t;
map<int, int> mp;

void compress(vector<int> a, int x) {
	vector<int> v;
	for (int i = 0; i < size(a); ++i) {
		if (!mp.count(a[i])) v.push_back(a[i]), mp[a[i]];
		if (!mp.count(a[i] - x + 1)) v.push_back(a[i] - x + 1), mp[a[i] - x + 1];
	}
	sort(all(v));
	vector<int> constructor;
	for (int i = 0; i < size(v); ++i) {
		mp[v[i]] = i + 1;
		constructor.push_back(0);
	}
	constructor.push_back(0);
	pst.construct(size(v), constructor);
	t.construct(size(v));
}

signed main() {
	cin.tie(nullptr)->sync_with_stdio(false);
	int n, x; cin >> n >> x;
	vector<int> a(n);
	for (int i = 0; i < n; ++i) {
		cin >> a[i];
	}
	compress(a, x);
	for (int i = n - 1, idx = 2; i >= 0; --i, ++idx) {
		pst.copy(idx - 1);
		int dp = pst.get(idx, mp[a[i]] + 1) + 1;
		pst.upd(idx, mp[a[i]], dp);
	}
	int res = 0;
	for (int i = 0, idx = n; i < n; ++i, --idx) {
		int dp = t.get(1, mp[a[i]] - 1) + 1;
		t.upd(mp[a[i]], dp);
		chmax(res, dp + pst.get(idx, mp[a[i] - x + 1]));
	}
	cout << res;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 2 ms 1372 KB Output is correct
20 Correct 2 ms 1372 KB Output is correct
21 Correct 2 ms 1372 KB Output is correct
22 Correct 2 ms 1372 KB Output is correct
23 Correct 1 ms 860 KB Output is correct
24 Correct 1 ms 860 KB Output is correct
25 Correct 1 ms 860 KB Output is correct
26 Correct 2 ms 860 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1134 ms 219616 KB Output is correct
2 Correct 947 ms 219620 KB Output is correct
3 Correct 1018 ms 219604 KB Output is correct
4 Correct 1039 ms 219600 KB Output is correct
5 Correct 255 ms 110900 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 55280 KB Output is correct
2 Correct 139 ms 55236 KB Output is correct
3 Correct 140 ms 55372 KB Output is correct
4 Correct 57 ms 28172 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Runtime error 47 ms 28644 KB Execution killed with signal 11
7 Halted 0 ms 0 KB -

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 325 ms 110136 KB Output is correct
2 Correct 391 ms 110136 KB Output is correct
3 Correct 929 ms 219676 KB Output is correct
4 Correct 327 ms 110820 KB Output is correct
5 Correct 193 ms 110000 KB Output is correct
6 Correct 380 ms 208844 KB Output is correct
7 Correct 378 ms 208572 KB Output is correct
8 Correct 257 ms 110160 KB Output is correct

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 2 ms 1372 KB Output is correct
20 Correct 2 ms 1372 KB Output is correct
21 Correct 2 ms 1372 KB Output is correct
22 Correct 2 ms 1372 KB Output is correct
23 Correct 1 ms 860 KB Output is correct
24 Correct 1 ms 860 KB Output is correct
25 Correct 1 ms 860 KB Output is correct
26 Correct 2 ms 860 KB Output is correct
27 Correct 1134 ms 219616 KB Output is correct
28 Correct 947 ms 219620 KB Output is correct
29 Correct 1018 ms 219604 KB Output is correct
30 Correct 1039 ms 219600 KB Output is correct
31 Correct 255 ms 110900 KB Output is correct
32 Correct 158 ms 55280 KB Output is correct
33 Correct 139 ms 55236 KB Output is correct
34 Correct 140 ms 55372 KB Output is correct
35 Correct 57 ms 28172 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Runtime error 47 ms 28644 KB Execution killed with signal 11
38 Halted 0 ms 0 KB -