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답안 #417967

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
417967 2021-06-04T17:14:41 Z nvmdava 3단 점프 (JOI19_jumps) C++17
100 / 100
 1358 ms 160800 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ff first
#define ss second
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int N = 2000005;
const ll MOD = 1000000007;
const ll INF = 0x3f3f3f3f3f3f3f3f;
const int SQ = 300;

int a[N];

int lz[N], con[N], ans[N];

void build(int id, int l, int r){
    if(l == r){
        con[id] = ans[id] = a[l];
        return;
    }
    int m = (l + r) >> 1;
    build(id << 1, l, m);
    build(id << 1 | 1, m + 1, r);

    con[id] = ans[id] = max(con[id << 1], con[id << 1 | 1]);
}

void reset(int id, int l, int r){
    ans[id] = max(ans[id], con[id] + lz[id]);
}

void update(int id, int l, int r, int L, int R, int x){
    lz[id] = max(lz[id], lz[id >> 1]);
    ans[id] = max(ans[id], con[id] + lz[id]);
    if(r < L || R < l) return;
    if(L <= l && r <= R){
        lz[id] = max(lz[id], x);
        ans[id] = max(ans[id], con[id] + lz[id]);
        return;
    }
    int m = (l + r) >> 1;
    update(id << 1, l, m, L, R, x);
    update(id << 1 | 1, m + 1, r, L, R, x);
    ans[id] = max({ans[id], ans[id << 1], ans[id << 1 | 1]});
}

int query(int id, int l, int r, int L, int R){
    lz[id] = max(lz[id], lz[id >> 1]);
    ans[id] = max(ans[id], con[id] + lz[id]);
    if(r < L || R < l)
        return 0;
    if(L <= l && r <= R)
        return ans[id];
    int m = (l + r) >> 1;
    return max(query(id << 1, l, m, L, R), query(id << 1 | 1, m + 1, r, L, R));
}

vector<pair<int, int> > upd[N], que[N];
int res[N];

vector<int> tmp;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    int n;
    cin>>n;

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

    build(1, 1, n);

    for(int i = 1; i <= n; ++i){
        while(!tmp.empty() && a[tmp.back()] < a[i]){
            upd[tmp.back()].push_back({i * 2 - tmp.back(), a[i] + a[tmp.back()]});
            tmp.pop_back();
        }
        if(!tmp.empty())
            upd[tmp.back()].push_back({i * 2 - tmp.back(), a[i] + a[tmp.back()]});
        tmp.push_back(i);
    }
    
    int q;
    cin>>q;
    for(int l, r, i = 1; i <= q; ++i){
        cin>>l>>r;
        que[l].push_back({r, i});
    }

    for(int i = n; i >= 1; --i){
        for(auto& [pos, val] : upd[i])
            update(1, 1, n, pos, n, val);
        for(auto& [r, v] : que[i])
            res[v] = query(1, 1, n, i + 2, r);
    }

    for(int i = 1; i <= q; ++i)
        cout<<res[i]<<'\n';
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 53 ms 94276 KB Output is correct
2 Correct 54 ms 94164 KB Output is correct
3 Correct 54 ms 94284 KB Output is correct
4 Correct 55 ms 94248 KB Output is correct
5 Correct 56 ms 94208 KB Output is correct
6 Correct 57 ms 94252 KB Output is correct
7 Correct 54 ms 94208 KB Output is correct
8 Correct 54 ms 94244 KB Output is correct
9 Correct 55 ms 94276 KB Output is correct
10 Correct 55 ms 94240 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 53 ms 94276 KB Output is correct
2 Correct 54 ms 94164 KB Output is correct
3 Correct 54 ms 94284 KB Output is correct
4 Correct 55 ms 94248 KB Output is correct
5 Correct 56 ms 94208 KB Output is correct
6 Correct 57 ms 94252 KB Output is correct
7 Correct 54 ms 94208 KB Output is correct
8 Correct 54 ms 94244 KB Output is correct
9 Correct 55 ms 94276 KB Output is correct
10 Correct 55 ms 94240 KB Output is correct
11 Correct 402 ms 113308 KB Output is correct
12 Correct 393 ms 113212 KB Output is correct
13 Correct 391 ms 113192 KB Output is correct
14 Correct 385 ms 113256 KB Output is correct
15 Correct 390 ms 113252 KB Output is correct
16 Correct 384 ms 112660 KB Output is correct
17 Correct 385 ms 112528 KB Output is correct
18 Correct 387 ms 112568 KB Output is correct
19 Correct 383 ms 113148 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 250 ms 110432 KB Output is correct
2 Correct 159 ms 109124 KB Output is correct
3 Correct 160 ms 109900 KB Output is correct
4 Correct 242 ms 110392 KB Output is correct
5 Correct 243 ms 110408 KB Output is correct
6 Correct 239 ms 109784 KB Output is correct
7 Correct 239 ms 109636 KB Output is correct
8 Correct 241 ms 109700 KB Output is correct
9 Correct 247 ms 109892 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 53 ms 94276 KB Output is correct
2 Correct 54 ms 94164 KB Output is correct
3 Correct 54 ms 94284 KB Output is correct
4 Correct 55 ms 94248 KB Output is correct
5 Correct 56 ms 94208 KB Output is correct
6 Correct 57 ms 94252 KB Output is correct
7 Correct 54 ms 94208 KB Output is correct
8 Correct 54 ms 94244 KB Output is correct
9 Correct 55 ms 94276 KB Output is correct
10 Correct 55 ms 94240 KB Output is correct
11 Correct 402 ms 113308 KB Output is correct
12 Correct 393 ms 113212 KB Output is correct
13 Correct 391 ms 113192 KB Output is correct
14 Correct 385 ms 113256 KB Output is correct
15 Correct 390 ms 113252 KB Output is correct
16 Correct 384 ms 112660 KB Output is correct
17 Correct 385 ms 112528 KB Output is correct
18 Correct 387 ms 112568 KB Output is correct
19 Correct 383 ms 113148 KB Output is correct
20 Correct 250 ms 110432 KB Output is correct
21 Correct 159 ms 109124 KB Output is correct
22 Correct 160 ms 109900 KB Output is correct
23 Correct 242 ms 110392 KB Output is correct
24 Correct 243 ms 110408 KB Output is correct
25 Correct 239 ms 109784 KB Output is correct
26 Correct 239 ms 109636 KB Output is correct
27 Correct 241 ms 109700 KB Output is correct
28 Correct 247 ms 109892 KB Output is correct
29 Correct 1351 ms 155100 KB Output is correct
30 Correct 1120 ms 151944 KB Output is correct
31 Correct 1100 ms 153984 KB Output is correct
32 Correct 1336 ms 155104 KB Output is correct
33 Correct 1345 ms 155064 KB Output is correct
34 Correct 1303 ms 152900 KB Output is correct
35 Correct 1358 ms 152584 KB Output is correct
36 Correct 1299 ms 152688 KB Output is correct
37 Correct 1342 ms 154068 KB Output is correct
38 Correct 981 ms 160800 KB Output is correct
39 Correct 978 ms 160748 KB Output is correct
40 Correct 964 ms 157548 KB Output is correct
41 Correct 953 ms 156996 KB Output is correct
42 Correct 965 ms 156980 KB Output is correct
43 Correct 955 ms 158836 KB Output is correct
44 Correct 1028 ms 160196 KB Output is correct
45 Correct 1044 ms 160196 KB Output is correct
46 Correct 1010 ms 157104 KB Output is correct
47 Correct 1010 ms 156668 KB Output is correct
48 Correct 1014 ms 156664 KB Output is correct
49 Correct 1024 ms 158728 KB Output is correct
50 Correct 1140 ms 158336 KB Output is correct
51 Correct 1126 ms 158320 KB Output is correct
52 Correct 1121 ms 155912 KB Output is correct
53 Correct 1127 ms 155532 KB Output is correct
54 Correct 1107 ms 155564 KB Output is correct
55 Correct 1115 ms 157380 KB Output is correct