oj.uz

답안 #806893

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
806893 2023-08-04T10:54:22 Z hugo_pm 3단 점프 (JOI19_jumps) C++17
100 / 100
 594 ms 106744 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()
#define rep(i, a, b) for(int i = (a); i < (b); i++)
#define sz(v) ((int)((v).size()))

template<typename T>
void chmax(T &x, const T &v) { if (x < v) x = v; }
template<typename T>
void chmin(T &x, const T &v) { if (x > v) x = v; }

using pii = pair<int, int>;
using vi = vector<int>;

string to_string(string s) { return s; }
template <typename T> string to_string(T v) {
	bool first = true;
	string res = "[";
	for (const auto &x : v) {
		if (!first)
			res += ", ";
		first = false;
		res += to_string(x);
	}
	res += "]";
	return res;
}

template <typename val, typename B>
string to_string(pair<val, B> p) {
  return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}

void dbg_out() { cout << endl; }
template <typename Head, typename... Tail> void dbg_out(Head H, Tail... T) {
	cout << ' ' << to_string(H);
	dbg_out(T...);
}

#ifdef DEBUG
#define dbg(...) cout << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__)
#else
#define dbg(...)
#endif

struct Node {
    int maxRouge, maxBleu, maxSomme;
    void up() { chmax(maxSomme, maxRouge+maxBleu); }
};

Node op(Node a, Node b) {
    return {
        max(a.maxRouge, b.maxRouge),
        max(a.maxBleu, b.maxBleu),
        max(max(a.maxSomme, b.maxSomme), a.maxRouge + b.maxBleu)
    };
}
Node e = {0, 0, 0};
const int ROUGE = 0, BLEU = 1;
struct Segtree {
    vector<Node> tree;
    int N;
    Segtree(int _N) : N(_N) {
        tree.assign(2*N, e);
    }
    int query_include(int L, int R) {
        L += N, R += N+1;
        Node resl = e, resr = e;
        while (L < R) {
            if (L & 1) resl = op(resl, tree[L++]);
            if (R & 1) resr = op(tree[--R], resr);
            L /= 2, R /= 2;
        }
        return op(resl, resr).maxSomme;
    }
    void prop(int i, int coul, int x) {
        i += N;
        assert(0 <= i && i < 2*N);
        chmax(coul == ROUGE ? tree[i].maxRouge : tree[i].maxBleu, x);
        tree[i].up();
        while (i >= 1) {
            i /= 2;
            tree[i] = op(tree[2*i], tree[2*i+1]);
        }
    }
};

struct Req {
    int l, r, i;
};
signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
    int N; cin >> N;
    vector<int> val(N);
    for (int &x : val) cin >>x;
    int Q; cin >> Q;
    vector<vector<Req>> req(N);
    vector<int> ansReq(Q);
    rep(i, 0, Q) {
        int l, r;
        cin >> l >> r;
        --l, --r;
        req[l].push_back({l, r, i});
    }
    vector<int> stk;
    vector<vi> cand(N);
    rep(B, 0, N) {
        while (!stk.empty()) {
            int A = stk.back();
            cand[A].push_back(B);
            if (val[A] >= val[B]) break;
            stk.pop_back();
        }
        stk.push_back(B);
    }
    Segtree st(N+1);
    vector<pii> ptRouge, ptBleu;
    for (int i = N-1; i >= 0; --i) {
        //ptBleu.emplace_back(i, val[i]);
        st.prop(i, BLEU, val[i]);
        {
            int A = i;
            for (int B : cand[i]) {
                int suffC = min(B + (B-A), N);
                //ptRouge.emplace_back(suffC, val[A]+val[B]);
                st.prop(suffC, ROUGE, val[A]+val[B]);
            }
        }
        for (Req rq : req[i]) {
            ansReq[rq.i] = st.query_include(rq.l, rq.r);
        }
    }
    rep(i, 0, Q) {
        cout << ansReq[i] << '\n';
    }
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 150 ms 29260 KB Output is correct
12 Correct 147 ms 33828 KB Output is correct
13 Correct 147 ms 34140 KB Output is correct
14 Correct 147 ms 34064 KB Output is correct
15 Correct 154 ms 34104 KB Output is correct
16 Correct 155 ms 33380 KB Output is correct
17 Correct 145 ms 33372 KB Output is correct
18 Correct 146 ms 33260 KB Output is correct
19 Correct 159 ms 33836 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 101 ms 28216 KB Output is correct
2 Correct 59 ms 28624 KB Output is correct
3 Correct 60 ms 30228 KB Output is correct
4 Correct 88 ms 29780 KB Output is correct
5 Correct 87 ms 29896 KB Output is correct
6 Correct 87 ms 29244 KB Output is correct
7 Correct 87 ms 29112 KB Output is correct
8 Correct 84 ms 29132 KB Output is correct
9 Correct 86 ms 29368 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 150 ms 29260 KB Output is correct
12 Correct 147 ms 33828 KB Output is correct
13 Correct 147 ms 34140 KB Output is correct
14 Correct 147 ms 34064 KB Output is correct
15 Correct 154 ms 34104 KB Output is correct
16 Correct 155 ms 33380 KB Output is correct
17 Correct 145 ms 33372 KB Output is correct
18 Correct 146 ms 33260 KB Output is correct
19 Correct 159 ms 33836 KB Output is correct
20 Correct 101 ms 28216 KB Output is correct
21 Correct 59 ms 28624 KB Output is correct
22 Correct 60 ms 30228 KB Output is correct
23 Correct 88 ms 29780 KB Output is correct
24 Correct 87 ms 29896 KB Output is correct
25 Correct 87 ms 29244 KB Output is correct
26 Correct 87 ms 29112 KB Output is correct
27 Correct 84 ms 29132 KB Output is correct
28 Correct 86 ms 29368 KB Output is correct
29 Correct 591 ms 105996 KB Output is correct
30 Correct 493 ms 102900 KB Output is correct
31 Correct 530 ms 106744 KB Output is correct
32 Correct 570 ms 106000 KB Output is correct
33 Correct 582 ms 106024 KB Output is correct
34 Correct 594 ms 103744 KB Output is correct
35 Correct 562 ms 103360 KB Output is correct
36 Correct 588 ms 103356 KB Output is correct
37 Correct 549 ms 104824 KB Output is correct
38 Correct 375 ms 105472 KB Output is correct
39 Correct 384 ms 105392 KB Output is correct
40 Correct 372 ms 102056 KB Output is correct
41 Correct 362 ms 101608 KB Output is correct
42 Correct 367 ms 101652 KB Output is correct
43 Correct 370 ms 103292 KB Output is correct
44 Correct 421 ms 105500 KB Output is correct
45 Correct 421 ms 105448 KB Output is correct
46 Correct 407 ms 102348 KB Output is correct
47 Correct 425 ms 101868 KB Output is correct
48 Correct 413 ms 101916 KB Output is correct
49 Correct 412 ms 103924 KB Output is correct
50 Correct 484 ms 105684 KB Output is correct
51 Correct 502 ms 105712 KB Output is correct
52 Correct 464 ms 103152 KB Output is correct
53 Correct 455 ms 102796 KB Output is correct
54 Correct 463 ms 102900 KB Output is correct
55 Correct 472 ms 104488 KB Output is correct