oj.uz

Submission #725898

# Submission time Handle Problem Language Result Execution time Memory
725898 2023-04-18T08:32:19 Z amunduzbaev Abracadabra (CEOI22_abracadabra) C++17
100 / 100
 1012 ms 63140 KB 
#include "bits/stdc++.h"
using namespace std;
 
#define ar array
typedef long long ll;
#define int ll

const int N = 2e5 + 5;
struct ST{
	int tree[N << 2];
	
	void add(int i, int v, int lx = 0, int rx = N, int x = 1){
		if(lx == rx){
			tree[x] += v; return;
		}
		int m = (lx + rx) >> 1;
		if(i <= m) add(i, v, lx, m, x << 1);
		else add(i, v, m + 1, rx, x << 1 | 1);
		tree[x] = tree[x << 1] + tree[x << 1 | 1];
	}
	
	int sum(int l, int r, int lx = 0, int rx = N, int x = 1){
		if(lx > r || rx < l) return 0;
		if(lx >= l && rx <= r) return tree[x];
		int m = (lx + rx) >> 1;
		return sum(l, r, lx, m, x << 1) + sum(l, r, m + 1, rx, x << 1 | 1);
	}
	
	int get(int v, int lx = 0, int rx = N, int x = 1){
		if(lx == rx) return lx;
		int m = (lx + rx) >> 1;
		if(tree[x << 1] > v) return get(v, lx, m, x << 1);
		else return get(v - tree[x << 1], m + 1, rx, x << 1 | 1);
	}
}tree;

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n, q; cin >> n >> q;
	vector<int> a(n);
	for(int i=0;i<n;i++){
		cin >> a[i]; a[i]--;
	}
	
	vector<int> t(q), id(q);
	vector<int> p(q), res(q, -1);
	for(int i=0;i<q;i++){
		cin >> t[i] >> id[i]; --id[i];
		p[i] = i;
	}
	
	sort(p.begin(), p.end(), [&](int i, int j){
		if(t[i] != t[j]) return t[i] < t[j];
		else return id[i] < id[j];
	});
	int j = 0;
	while(j < q && t[p[j]] == 0){
		res[p[j]] = a[id[p[j]]];
		j++;
	}
	vector<int> cnt(n), pos(n), par(n, n), ss;
	for(int i=n-1;~i;i--){
		pos[a[i]] = i;
		while(!ss.empty() && a[ss.back()] < a[i]) ss.pop_back();
		if(!ss.empty()) par[i] = ss.back();
		ss.push_back(i);
	}
	{
		int i = 0, m = n / 2;
		while(i < m){
			cnt[a[i]] = min(m, par[i]) - i;
			tree.add(a[i], cnt[a[i]]);
			i = par[i];
		}
		i = m;
		while(i < n){
			cnt[a[i]] = par[i] - i;
			tree.add(a[i], cnt[a[i]]);
			i = par[i];
		}
	}
	
		//~ for(int i=0;i<n;i++){
			//~ cout<<cnt[i]<<" ";
		//~ } cout<<"\n";
	for(int i=1;i<=n;i++){
		while(j < q && t[p[j]] == i){
			int k = tree.get(id[p[j]]), sum = (k ? tree.sum(0, k - 1) : 0);
			res[p[j]] = a[pos[k] + (id[p[j]] - sum)];
			j++;
		}
		int P = tree.get(n / 2 - 1);
		int rem = tree.sum(0, P) - n / 2;
		
		if(!rem){
			break;
		}
		//~ cout<<P<<" "<<rem<<endl;
		cnt[P] -= rem;
		tree.add(P, -rem);
		P = pos[P] + cnt[P];
		int k = P; P += rem;
		while(k < P){
			//~ assert(!cnt[a[k]]);
			cnt[a[k]] = min(P, par[k]) - k;
			//~ assert(!tree.sum(a[k], a[k]));
			tree.add(a[k], cnt[a[k]] - tree.sum(a[k], a[k]));
			k = par[k];
		}
		//~ for(int i=0;i<n;i++){
			//~ cout<<cnt[i]<<" ";
		//~ } cout<<"\n";
	}
	
	while(j < q){
		int k = tree.get(id[p[j]]), sum = (k ? tree.sum(0, k - 1) : 0);
		res[p[j]] = a[pos[k] + (id[p[j]] - sum)];
		j++;
	}
	for(int i=0;i<q;i++){
		cout<<++res[i]<<"\n";
	}
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 679 ms 35876 KB Output is correct
2 Correct 701 ms 35848 KB Output is correct
3 Correct 598 ms 34460 KB Output is correct
4 Correct 569 ms 34252 KB Output is correct
5 Correct 614 ms 35724 KB Output is correct
6 Correct 557 ms 34240 KB Output is correct
7 Correct 613 ms 35788 KB Output is correct
8 Correct 582 ms 34408 KB Output is correct
9 Correct 571 ms 34044 KB Output is correct
10 Correct 613 ms 34716 KB Output is correct
11 Correct 543 ms 34644 KB Output is correct
12 Correct 482 ms 34164 KB Output is correct
13 Correct 599 ms 34884 KB Output is correct
14 Correct 603 ms 35076 KB Output is correct
15 Correct 605 ms 35676 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 335 ms 34700 KB Output is correct
18 Correct 438 ms 34400 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 493 ms 49120 KB Output is correct
2 Correct 486 ms 63140 KB Output is correct
3 Correct 441 ms 51364 KB Output is correct
4 Correct 400 ms 50684 KB Output is correct
5 Correct 391 ms 51768 KB Output is correct
6 Correct 349 ms 49836 KB Output is correct
7 Correct 407 ms 61560 KB Output is correct
8 Correct 434 ms 59056 KB Output is correct
9 Correct 374 ms 51552 KB Output is correct
10 Correct 379 ms 57804 KB Output is correct
11 Correct 325 ms 49088 KB Output is correct
12 Correct 361 ms 49040 KB Output is correct
13 Correct 412 ms 57280 KB Output is correct
14 Correct 341 ms 50564 KB Output is correct
15 Correct 418 ms 59456 KB Output is correct
16 Correct 35 ms 11080 KB Output is correct
17 Correct 285 ms 57372 KB Output is correct
18 Correct 345 ms 43184 KB Output is correct
19 Correct 79 ms 19524 KB Output is correct
20 Correct 106 ms 21656 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 135 ms 9528 KB Output is correct
2 Correct 109 ms 11620 KB Output is correct
3 Correct 110 ms 11148 KB Output is correct
4 Correct 64 ms 10564 KB Output is correct
5 Correct 111 ms 10888 KB Output is correct
6 Correct 75 ms 10472 KB Output is correct
7 Correct 83 ms 10880 KB Output is correct
8 Correct 75 ms 10444 KB Output is correct
9 Correct 88 ms 10612 KB Output is correct
10 Correct 65 ms 10368 KB Output is correct
11 Correct 65 ms 10568 KB Output is correct
12 Correct 71 ms 10196 KB Output is correct
13 Correct 59 ms 10436 KB Output is correct
14 Correct 64 ms 10592 KB Output is correct
15 Correct 65 ms 10024 KB Output is correct
16 Correct 16 ms 5968 KB Output is correct
17 Correct 49 ms 11080 KB Output is correct
18 Correct 47 ms 8220 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 679 ms 35876 KB Output is correct
2 Correct 701 ms 35848 KB Output is correct
3 Correct 598 ms 34460 KB Output is correct
4 Correct 569 ms 34252 KB Output is correct
5 Correct 614 ms 35724 KB Output is correct
6 Correct 557 ms 34240 KB Output is correct
7 Correct 613 ms 35788 KB Output is correct
8 Correct 582 ms 34408 KB Output is correct
9 Correct 571 ms 34044 KB Output is correct
10 Correct 613 ms 34716 KB Output is correct
11 Correct 543 ms 34644 KB Output is correct
12 Correct 482 ms 34164 KB Output is correct
13 Correct 599 ms 34884 KB Output is correct
14 Correct 603 ms 35076 KB Output is correct
15 Correct 605 ms 35676 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 335 ms 34700 KB Output is correct
18 Correct 438 ms 34400 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 493 ms 49120 KB Output is correct
22 Correct 486 ms 63140 KB Output is correct
23 Correct 441 ms 51364 KB Output is correct
24 Correct 400 ms 50684 KB Output is correct
25 Correct 391 ms 51768 KB Output is correct
26 Correct 349 ms 49836 KB Output is correct
27 Correct 407 ms 61560 KB Output is correct
28 Correct 434 ms 59056 KB Output is correct
29 Correct 374 ms 51552 KB Output is correct
30 Correct 379 ms 57804 KB Output is correct
31 Correct 325 ms 49088 KB Output is correct
32 Correct 361 ms 49040 KB Output is correct
33 Correct 412 ms 57280 KB Output is correct
34 Correct 341 ms 50564 KB Output is correct
35 Correct 418 ms 59456 KB Output is correct
36 Correct 35 ms 11080 KB Output is correct
37 Correct 285 ms 57372 KB Output is correct
38 Correct 345 ms 43184 KB Output is correct
39 Correct 79 ms 19524 KB Output is correct
40 Correct 106 ms 21656 KB Output is correct
41 Correct 135 ms 9528 KB Output is correct
42 Correct 109 ms 11620 KB Output is correct
43 Correct 110 ms 11148 KB Output is correct
44 Correct 64 ms 10564 KB Output is correct
45 Correct 111 ms 10888 KB Output is correct
46 Correct 75 ms 10472 KB Output is correct
47 Correct 83 ms 10880 KB Output is correct
48 Correct 75 ms 10444 KB Output is correct
49 Correct 88 ms 10612 KB Output is correct
50 Correct 65 ms 10368 KB Output is correct
51 Correct 65 ms 10568 KB Output is correct
52 Correct 71 ms 10196 KB Output is correct
53 Correct 59 ms 10436 KB Output is correct
54 Correct 64 ms 10592 KB Output is correct
55 Correct 65 ms 10024 KB Output is correct
56 Correct 16 ms 5968 KB Output is correct
57 Correct 49 ms 11080 KB Output is correct
58 Correct 47 ms 8220 KB Output is correct
59 Correct 1 ms 332 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 904 ms 62264 KB Output is correct
62 Correct 1012 ms 62972 KB Output is correct
63 Correct 960 ms 60292 KB Output is correct
64 Correct 745 ms 59076 KB Output is correct
65 Correct 814 ms 61488 KB Output is correct
66 Correct 781 ms 58776 KB Output is correct
67 Correct 724 ms 61132 KB Output is correct
68 Correct 856 ms 58776 KB Output is correct
69 Correct 823 ms 58952 KB Output is correct
70 Correct 786 ms 58536 KB Output is correct
71 Correct 731 ms 57280 KB Output is correct
72 Correct 730 ms 58072 KB Output is correct
73 Correct 723 ms 58208 KB Output is correct
74 Correct 809 ms 59652 KB Output is correct
75 Correct 837 ms 59892 KB Output is correct
76 Correct 29 ms 11080 KB Output is correct
77 Correct 565 ms 57572 KB Output is correct
78 Correct 647 ms 51804 KB Output is correct
79 Correct 1 ms 340 KB Output is correct
80 Correct 1 ms 332 KB Output is correct