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답안 #1102123

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1102123 2024-10-17T13:52:53 Z ro9669 3단 점프 (JOI19_jumps) C++17
100 / 100
 735 ms 70988 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
#define all(v) v.begin() , v.end()
#define sz(v) int(v.size())
#define unq(v) sort(all(v)); v.resize(unique(all(v)) - v.begin());
using namespace std;

typedef long long ll;
typedef pair<int , int> ii;
typedef pair<long long , int> lli;

const int maxN = int(5e5)+7;

int n , q , a[maxN] , res[maxN];
vector<ii> query[maxN];

struct node{
    int lazy , base , val;
    node(){
        lazy = base = val = 0;
    }
} st[4 * maxN];

#define lef(id) id * 2
#define rig(id) id * 2 + 1

void build(int id , int l , int r){
    if (l == r){
        st[id].base = a[l];
        return;
    }
    int mid = (l + r) / 2;
    build(lef(id) , l , mid);
    build(rig(id) , mid + 1 , r);
    st[id].base = max(st[lef(id)].base , st[rig(id)].base);
}

void modify(int id , int x){
    st[id].lazy = max(st[id].lazy , x);
    st[id].val = max(st[id].val , st[id].base + x);
}

void down(int id , int l , int r){
    int &x = st[id].lazy;
    if (l == r) return;
    modify(lef(id) , x);
    modify(rig(id) , x);
}

void update(int id , int l , int r , int u , int v , int x){
    if (v < l || r < u) return;
    if (u <= l && r <= v) return modify(id , x);
    down(id , l , r);
    int mid = (l + r) / 2;
    update(lef(id) , l , mid , u , v , x);
    update(rig(id) , mid + 1 , r , u , v , x);
    st[id].val = max(st[lef(id)].val , st[rig(id)].val);
}

int get(int id , int l , int r , int u , int v){
    if (v < l || r < u) return 0;
    if (u <= l && r <= v) return st[id].val;
    down(id , l , r);
    int mid = (l + r) / 2;
    return max(get(lef(id) , l , mid , u , v) , get(rig(id) , mid + 1 , r , u , v));
}

void update(int x , int y){
    int z = 2 * y - x;
    update(1 , 1 , n , z , n , a[x] + a[y]);
}

void solve(){
    cin >> n;
    for (int i = 1 ; i <= n ; i++) cin >> a[i];
    build(1 , 1 , n);
    cin >> q;
    for (int i = 1 ; i <= q ; i++){
        int l , r;
        cin >> l >> r;
        query[l].push_back({r , i});
    }
    deque<int> dq;
    for (int i = n ; i >= 1 ; i--){
        while (dq.empty() == 0 && a[i] >= a[dq.back()]){
            update(i , dq.back());
            dq.pop_back();
        }
        if (dq.empty() == 0) update(i , dq.back());
        for (auto it : query[i]){
            res[it.se] = get(1 , 1 , n , i , it.fi);
        }
        dq.push_back(i);
    }
    for (int i = 1 ; i <= q ; i++) cout << res[i] << "\n";
}

#define name "A"

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    if (fopen(name".INP" , "r")){
        freopen(name".INP" , "r" , stdin);
        freopen(name".OUT" , "w" , stdout);
    }
    int t = 1; //cin >> t;
    while (t--) solve();
    return 0;
}

Compilation message

jumps.cpp: In function 'int main()':
jumps.cpp:104:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  104 |         freopen(name".INP" , "r" , stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
jumps.cpp:105:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  105 |         freopen(name".OUT" , "w" , stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 35664 KB Output is correct
2 Correct 22 ms 35560 KB Output is correct
3 Correct 22 ms 35664 KB Output is correct
4 Correct 22 ms 35664 KB Output is correct
5 Correct 24 ms 35632 KB Output is correct
6 Correct 22 ms 35656 KB Output is correct
7 Correct 24 ms 35664 KB Output is correct
8 Correct 22 ms 35664 KB Output is correct
9 Correct 24 ms 35664 KB Output is correct
10 Correct 23 ms 35664 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 35664 KB Output is correct
2 Correct 22 ms 35560 KB Output is correct
3 Correct 22 ms 35664 KB Output is correct
4 Correct 22 ms 35664 KB Output is correct
5 Correct 24 ms 35632 KB Output is correct
6 Correct 22 ms 35656 KB Output is correct
7 Correct 24 ms 35664 KB Output is correct
8 Correct 22 ms 35664 KB Output is correct
9 Correct 24 ms 35664 KB Output is correct
10 Correct 23 ms 35664 KB Output is correct
11 Correct 230 ms 49480 KB Output is correct
12 Correct 228 ms 54092 KB Output is correct
13 Correct 219 ms 54120 KB Output is correct
14 Correct 224 ms 54172 KB Output is correct
15 Correct 218 ms 54124 KB Output is correct
16 Correct 220 ms 53580 KB Output is correct
17 Correct 221 ms 53572 KB Output is correct
18 Correct 242 ms 53580 KB Output is correct
19 Correct 251 ms 54192 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 114 ms 36424 KB Output is correct
2 Correct 75 ms 37192 KB Output is correct
3 Correct 77 ms 36468 KB Output is correct
4 Correct 106 ms 36432 KB Output is correct
5 Correct 107 ms 36428 KB Output is correct
6 Correct 113 ms 37192 KB Output is correct
7 Correct 104 ms 36228 KB Output is correct
8 Correct 105 ms 36260 KB Output is correct
9 Correct 110 ms 37460 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 35664 KB Output is correct
2 Correct 22 ms 35560 KB Output is correct
3 Correct 22 ms 35664 KB Output is correct
4 Correct 22 ms 35664 KB Output is correct
5 Correct 24 ms 35632 KB Output is correct
6 Correct 22 ms 35656 KB Output is correct
7 Correct 24 ms 35664 KB Output is correct
8 Correct 22 ms 35664 KB Output is correct
9 Correct 24 ms 35664 KB Output is correct
10 Correct 23 ms 35664 KB Output is correct
11 Correct 230 ms 49480 KB Output is correct
12 Correct 228 ms 54092 KB Output is correct
13 Correct 219 ms 54120 KB Output is correct
14 Correct 224 ms 54172 KB Output is correct
15 Correct 218 ms 54124 KB Output is correct
16 Correct 220 ms 53580 KB Output is correct
17 Correct 221 ms 53572 KB Output is correct
18 Correct 242 ms 53580 KB Output is correct
19 Correct 251 ms 54192 KB Output is correct
20 Correct 114 ms 36424 KB Output is correct
21 Correct 75 ms 37192 KB Output is correct
22 Correct 77 ms 36468 KB Output is correct
23 Correct 106 ms 36432 KB Output is correct
24 Correct 107 ms 36428 KB Output is correct
25 Correct 113 ms 37192 KB Output is correct
26 Correct 104 ms 36228 KB Output is correct
27 Correct 105 ms 36260 KB Output is correct
28 Correct 110 ms 37460 KB Output is correct
29 Correct 735 ms 65360 KB Output is correct
30 Correct 616 ms 67352 KB Output is correct
31 Correct 633 ms 65356 KB Output is correct
32 Correct 735 ms 65356 KB Output is correct
33 Correct 686 ms 65356 KB Output is correct
34 Correct 660 ms 63052 KB Output is correct
35 Correct 686 ms 62796 KB Output is correct
36 Correct 724 ms 62696 KB Output is correct
37 Correct 674 ms 64292 KB Output is correct
38 Correct 532 ms 70948 KB Output is correct
39 Correct 521 ms 70988 KB Output is correct
40 Correct 560 ms 67660 KB Output is correct
41 Correct 499 ms 67148 KB Output is correct
42 Correct 511 ms 67164 KB Output is correct
43 Correct 499 ms 68940 KB Output is correct
44 Correct 540 ms 70380 KB Output is correct
45 Correct 567 ms 70492 KB Output is correct
46 Correct 555 ms 67460 KB Output is correct
47 Correct 553 ms 66792 KB Output is correct
48 Correct 526 ms 66804 KB Output is correct
49 Correct 545 ms 68940 KB Output is correct
50 Correct 607 ms 68720 KB Output is correct
51 Correct 581 ms 68520 KB Output is correct
52 Correct 577 ms 66124 KB Output is correct
53 Correct 565 ms 65844 KB Output is correct
54 Correct 578 ms 65868 KB Output is correct
55 Correct 589 ms 67404 KB Output is correct