oj.uz

답안 #1085461

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1085461 2024-09-08T09:33:29 Z steveonalex 3단 점프 (JOI19_jumps) C++17
100 / 100
 679 ms 128432 KB 
// #include "rect.h"
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
#define block_of_code if(true)
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
ll gcd(ll a, ll b){return __gcd(a, b);}
ll lcm(ll a, ll b){return a / gcd(a, b) * b;}
 
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}
 
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
double rngesus_d(double l, double r){
    double cur = rngesus(0, MASK(60) - 1);
    cur /= MASK(60) - 1;
    return l + cur * (r - l);
}
 
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }
 
template <class T>
    void printArr(T container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }
 
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

const ll INF = 1e18 + 69;

struct SegmentTree{
    struct Node{
        ll val, lazy, ma;
        Node(){ma = 0; lazy = val = -INF;}
    };

    int n;
    vector<Node> a;

    void build_tree(int l, int r, int id, vector<int> &b){
        if (l == r){a[id].val = b[l] - INF; a[id].ma = b[l]; return;}
        int mid = (l + r) >> 1;
        build_tree(l, mid, id * 2, b);
        build_tree(mid + 1, r, id * 2 + 1, b);
        a[id].ma = max(a[id * 2].ma, a[id * 2 + 1].ma);
        a[id].val = max(a[id * 2].val, a[id * 2 + 1].val);
    }

    SegmentTree(int _n, vector<int> b){
        n = _n;
        a.resize(n*4+4);
        build_tree(1, n, 1, b);
    }

    void update_node(int id, ll val){
        maximize(a[id].lazy, val);
        maximize(a[id].val, a[id].ma + val);
    }

    void down(int id){
        update_node(id * 2, a[id].lazy);
        update_node(id * 2 + 1, a[id].lazy);
    }

    void update(int u, int v, ll val, int l, int r, int id){
        if (u <= l && r <= v){
            update_node(id, val);
            return;
        }
        down(id);
        int mid = (l + r) >> 1;
        if (u <= mid) update(u, v, val, l, mid, id * 2);
        if (v > mid) update(u, v, val, mid + 1, r, id * 2 + 1);
        a[id].val = max(a[id * 2].val, a[id * 2 + 1].val);
    }

    void update(int u, int v, ll val){
        update(u, v, val, 1, n, 1);
    }

    ll get(int u, int v, int l, int r, int id){
        if (u <= l && r <= v) return a[id].val;
        down(id);
        int mid = (l + r) >> 1;
        ll ans = -INF;
        if (u <= mid) maximize(ans, get(u, v, l, mid, id * 2));
        if (v > mid) maximize(ans, get(u, v, mid + 1, r, id * 2 + 1));
        return ans;
    }

    ll get(int u, int v){
        return get(u, v, 1, n, 1);
    }
};

int main(void){
    ios::sync_with_stdio(0);cin.tie(0); cout.tie(0);
    clock_t start = clock();

    int n; cin >> n;
    vector<int> a(n+1);
    for(int i = 1; i<=n; ++i) cin >> a[i];

    SegmentTree segg(n, a);
    
    vector<vector<int>> sigma(n+1);
    vector<int> st;
    for(int i = n; i>=1; --i){
        while(st.size() && a[st.back()] <= a[i]){
            sigma[i].push_back(st.back());
            st.pop_back();
        }
        if (st.size()) sigma[i].push_back(st.back());
        st.push_back(i);
    }

    int q; cin >> q;
    vector<vector<pair<int, int>>> queries(n+1);
    vector<ll> ans(q);
    for(int i = 0; i<q; ++i){
        int l, r; cin >> l >> r;
        queries[l].push_back({r, i});
    }

    for(int i = n; i>=1; --i){
        for(int j: sigma[i]){
            int k = j + (j - i);
            if (k > n) continue;
            segg.update(k, n, a[i] + a[j]);
        }
        for(pair<int, int> j: queries[i]){
            ans[j.second] = segg.get(1, j.first);
        }
    }

    printArr(ans, "\n", "");


    cerr << "Time elapsed: " << clock() - start << " ms\n";
    return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 139 ms 25684 KB Output is correct
12 Correct 144 ms 25628 KB Output is correct
13 Correct 149 ms 25832 KB Output is correct
14 Correct 136 ms 25680 KB Output is correct
15 Correct 138 ms 25852 KB Output is correct
16 Correct 141 ms 25168 KB Output is correct
17 Correct 157 ms 24908 KB Output is correct
18 Correct 157 ms 24912 KB Output is correct
19 Correct 135 ms 25680 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 115 ms 37440 KB Output is correct
2 Correct 63 ms 37956 KB Output is correct
3 Correct 69 ms 37424 KB Output is correct
4 Correct 106 ms 37436 KB Output is correct
5 Correct 106 ms 37444 KB Output is correct
6 Correct 114 ms 36928 KB Output is correct
7 Correct 109 ms 36680 KB Output is correct
8 Correct 104 ms 36888 KB Output is correct
9 Correct 106 ms 37184 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 139 ms 25684 KB Output is correct
12 Correct 144 ms 25628 KB Output is correct
13 Correct 149 ms 25832 KB Output is correct
14 Correct 136 ms 25680 KB Output is correct
15 Correct 138 ms 25852 KB Output is correct
16 Correct 141 ms 25168 KB Output is correct
17 Correct 157 ms 24908 KB Output is correct
18 Correct 157 ms 24912 KB Output is correct
19 Correct 135 ms 25680 KB Output is correct
20 Correct 115 ms 37440 KB Output is correct
21 Correct 63 ms 37956 KB Output is correct
22 Correct 69 ms 37424 KB Output is correct
23 Correct 106 ms 37436 KB Output is correct
24 Correct 106 ms 37444 KB Output is correct
25 Correct 114 ms 36928 KB Output is correct
26 Correct 109 ms 36680 KB Output is correct
27 Correct 104 ms 36888 KB Output is correct
28 Correct 106 ms 37184 KB Output is correct
29 Correct 619 ms 122924 KB Output is correct
30 Correct 479 ms 123972 KB Output is correct
31 Correct 523 ms 122076 KB Output is correct
32 Correct 679 ms 122544 KB Output is correct
33 Correct 604 ms 122564 KB Output is correct
34 Correct 595 ms 120496 KB Output is correct
35 Correct 590 ms 119984 KB Output is correct
36 Correct 627 ms 119992 KB Output is correct
37 Correct 591 ms 121516 KB Output is correct
38 Correct 450 ms 128240 KB Output is correct
39 Correct 430 ms 128432 KB Output is correct
40 Correct 436 ms 124980 KB Output is correct
41 Correct 443 ms 124592 KB Output is correct
42 Correct 428 ms 124592 KB Output is correct
43 Correct 433 ms 126380 KB Output is correct
44 Correct 481 ms 127664 KB Output is correct
45 Correct 453 ms 127688 KB Output is correct
46 Correct 446 ms 124588 KB Output is correct
47 Correct 441 ms 124276 KB Output is correct
48 Correct 446 ms 124076 KB Output is correct
49 Correct 434 ms 126348 KB Output is correct
50 Correct 488 ms 125920 KB Output is correct
51 Correct 491 ms 125868 KB Output is correct
52 Correct 495 ms 123352 KB Output is correct
53 Correct 486 ms 123052 KB Output is correct
54 Correct 478 ms 122944 KB Output is correct
55 Correct 488 ms 124640 KB Output is correct