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Submission #1054540

# Submission time Handle Problem Language Result Execution time Memory
1054540 2024-08-12T10:33:36 Z hotboy2703 Abracadabra (CEOI22_abracadabra) C++17
100 / 100
 358 ms 57172 KB 
#include<bits/stdc++.h>
using ll = long long;
using namespace std;
#define pll pair <ll,ll>
#define fi first
#define se second
#define MP make_pair
#define sz(a) (ll((a).size()))
#define BIT(mask,i) (((mask) >> (i))&1)
#define MASK(i) (1LL << (i))	
const ll MAXN = 2e5+100;
ll n,q;
pair <pll,ll> all[1'000'100];
ll ans[1'000'100];
ll p[MAXN],pos[MAXN];
ll nxt[MAXN];
ll tree[MAXN*4];
void update(ll id,ll l,ll r,ll i,ll v){
	if (l > i || r < i)return;
	if (l == r){
		tree[id]+=v;
		return;
	}
	ll mid = (l + r) >> 1;
	update(id<<1,l,mid,i,v);
	update(id<<1|1,mid+1,r,i,v);
	tree[id] = tree[id<<1] + tree[id<<1|1];
}
pair <ll,pll> get(ll id,ll l,ll r,ll k){
	if (l == r)return MP(l,MP(k,tree[id]));
	ll mid = (l + r) >> 1;
	if (tree[id<<1] >= k)return get(id<<1,l,mid,k);
	else return get(id<<1|1,mid+1,r,k-tree[id<<1]);
}
int main(){
	ios_base::sync_with_stdio(0);cin.tie(nullptr);
	cin>>n>>q;
	for (ll i = 1;i <= n;i ++){cin>>p[i];pos[p[i]] = i;}
	deque <ll> max1;
	for (ll i = n;i >= 1;i --){
		while (!max1.empty() && p[max1.back()] < p[i])max1.pop_back();
		if (max1.empty())nxt[i] = n+1;
		else nxt[i] = max1.back();
		max1.push_back(i);
	}
	set <pll> L,R;
	{
		ll cur = 1;
		while (cur <= n){
			pll x = MP(p[cur],nxt[cur]-cur);
			update(1,1,n,x.fi,x.se);
			cur = nxt[cur];
		}
	}
	for (ll i = 1;i <= q;i ++){
		cin>>all[i].fi.fi>>all[i].fi.se;
		all[i].fi.fi = min(all[i].fi.fi,n);
		all[i].se = i;
	}
	sort(all+1,all+1+q);
	for (ll i = 0,ptr = 1;i <= n;i ++){
		while (ptr<=q&&all[ptr].fi.fi == i){
			pair <ll,pll> tmp = get(1,1,n,all[ptr].fi.se);
			// cout<<ptr<<' '<<tmp.fi<<' '<<tmp.se.fi<<' '<<tmp.se.se<<' '<<p[pos[tmp.fi] + tmp.se.fi - 1]<<'\n';
			ans[all[ptr].se] = p[pos[tmp.fi] + tmp.se.fi - 1];
			ptr++;
		}
		pair <ll,pll> tmp = get(1,1,n,n/2+1);
		// cout<<i<<' '<<tmp.fi<<' '<<tmp.se.fi<<' '<<tmp.se.se<<'\n';
		update(1,1,n,tmp.fi,-tmp.se.se+(tmp.se.fi-1));
		ll cur = pos[tmp.fi] + tmp.se.fi - 1;
		ll r = pos[tmp.fi] + tmp.se.se - 1;
		while (cur <= r){
			ll nx = min(nxt[cur],r+1);
			pll x = MP(p[cur],nx-cur);
			update(1,1,n,x.fi,x.se);
			cur = nx;
		}
		// cout<<i<<' '<<ptr<<endl;
	}
	for (ll i = 1;i <= q;i ++)cout<<ans[i]<<'\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 219 ms 42324 KB Output is correct
2 Correct 210 ms 46184 KB Output is correct
3 Correct 213 ms 44940 KB Output is correct
4 Correct 210 ms 44368 KB Output is correct
5 Correct 203 ms 45908 KB Output is correct
6 Correct 191 ms 44560 KB Output is correct
7 Correct 203 ms 45972 KB Output is correct
8 Correct 192 ms 44884 KB Output is correct
9 Correct 198 ms 44308 KB Output is correct
10 Correct 195 ms 45044 KB Output is correct
11 Correct 228 ms 44956 KB Output is correct
12 Correct 196 ms 44084 KB Output is correct
13 Correct 199 ms 44884 KB Output is correct
14 Correct 198 ms 45244 KB Output is correct
15 Correct 202 ms 45376 KB Output is correct
16 Correct 1 ms 10588 KB Output is correct
17 Correct 186 ms 44316 KB Output is correct
18 Correct 196 ms 44200 KB Output is correct
19 Correct 2 ms 10584 KB Output is correct
20 Correct 1 ms 10588 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 231 ms 49180 KB Output is correct
2 Correct 239 ms 55632 KB Output is correct
3 Correct 217 ms 47720 KB Output is correct
4 Correct 227 ms 49168 KB Output is correct
5 Correct 235 ms 49076 KB Output is correct
6 Correct 233 ms 46776 KB Output is correct
7 Correct 258 ms 54412 KB Output is correct
8 Correct 242 ms 52832 KB Output is correct
9 Correct 238 ms 48980 KB Output is correct
10 Correct 252 ms 52412 KB Output is correct
11 Correct 211 ms 48320 KB Output is correct
12 Correct 207 ms 46520 KB Output is correct
13 Correct 225 ms 52236 KB Output is correct
14 Correct 219 ms 48644 KB Output is correct
15 Correct 265 ms 53136 KB Output is correct
16 Correct 51 ms 15704 KB Output is correct
17 Correct 243 ms 53244 KB Output is correct
18 Correct 207 ms 43480 KB Output is correct
19 Correct 109 ms 23696 KB Output is correct
20 Correct 83 ms 22352 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 15440 KB Output is correct
2 Correct 65 ms 17148 KB Output is correct
3 Correct 51 ms 16724 KB Output is correct
4 Correct 47 ms 16396 KB Output is correct
5 Correct 51 ms 16468 KB Output is correct
6 Correct 61 ms 16576 KB Output is correct
7 Correct 60 ms 16468 KB Output is correct
8 Correct 71 ms 16324 KB Output is correct
9 Correct 50 ms 16516 KB Output is correct
10 Correct 69 ms 16464 KB Output is correct
11 Correct 48 ms 16388 KB Output is correct
12 Correct 64 ms 16464 KB Output is correct
13 Correct 57 ms 16468 KB Output is correct
14 Correct 46 ms 16468 KB Output is correct
15 Correct 53 ms 16720 KB Output is correct
16 Correct 39 ms 13400 KB Output is correct
17 Correct 45 ms 17292 KB Output is correct
18 Correct 41 ms 16208 KB Output is correct
19 Correct 1 ms 10588 KB Output is correct
20 Correct 1 ms 10588 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 219 ms 42324 KB Output is correct
2 Correct 210 ms 46184 KB Output is correct
3 Correct 213 ms 44940 KB Output is correct
4 Correct 210 ms 44368 KB Output is correct
5 Correct 203 ms 45908 KB Output is correct
6 Correct 191 ms 44560 KB Output is correct
7 Correct 203 ms 45972 KB Output is correct
8 Correct 192 ms 44884 KB Output is correct
9 Correct 198 ms 44308 KB Output is correct
10 Correct 195 ms 45044 KB Output is correct
11 Correct 228 ms 44956 KB Output is correct
12 Correct 196 ms 44084 KB Output is correct
13 Correct 199 ms 44884 KB Output is correct
14 Correct 198 ms 45244 KB Output is correct
15 Correct 202 ms 45376 KB Output is correct
16 Correct 1 ms 10588 KB Output is correct
17 Correct 186 ms 44316 KB Output is correct
18 Correct 196 ms 44200 KB Output is correct
19 Correct 2 ms 10584 KB Output is correct
20 Correct 1 ms 10588 KB Output is correct
21 Correct 231 ms 49180 KB Output is correct
22 Correct 239 ms 55632 KB Output is correct
23 Correct 217 ms 47720 KB Output is correct
24 Correct 227 ms 49168 KB Output is correct
25 Correct 235 ms 49076 KB Output is correct
26 Correct 233 ms 46776 KB Output is correct
27 Correct 258 ms 54412 KB Output is correct
28 Correct 242 ms 52832 KB Output is correct
29 Correct 238 ms 48980 KB Output is correct
30 Correct 252 ms 52412 KB Output is correct
31 Correct 211 ms 48320 KB Output is correct
32 Correct 207 ms 46520 KB Output is correct
33 Correct 225 ms 52236 KB Output is correct
34 Correct 219 ms 48644 KB Output is correct
35 Correct 265 ms 53136 KB Output is correct
36 Correct 51 ms 15704 KB Output is correct
37 Correct 243 ms 53244 KB Output is correct
38 Correct 207 ms 43480 KB Output is correct
39 Correct 109 ms 23696 KB Output is correct
40 Correct 83 ms 22352 KB Output is correct
41 Correct 48 ms 15440 KB Output is correct
42 Correct 65 ms 17148 KB Output is correct
43 Correct 51 ms 16724 KB Output is correct
44 Correct 47 ms 16396 KB Output is correct
45 Correct 51 ms 16468 KB Output is correct
46 Correct 61 ms 16576 KB Output is correct
47 Correct 60 ms 16468 KB Output is correct
48 Correct 71 ms 16324 KB Output is correct
49 Correct 50 ms 16516 KB Output is correct
50 Correct 69 ms 16464 KB Output is correct
51 Correct 48 ms 16388 KB Output is correct
52 Correct 64 ms 16464 KB Output is correct
53 Correct 57 ms 16468 KB Output is correct
54 Correct 46 ms 16468 KB Output is correct
55 Correct 53 ms 16720 KB Output is correct
56 Correct 39 ms 13400 KB Output is correct
57 Correct 45 ms 17292 KB Output is correct
58 Correct 41 ms 16208 KB Output is correct
59 Correct 1 ms 10588 KB Output is correct
60 Correct 1 ms 10588 KB Output is correct
61 Correct 323 ms 56420 KB Output is correct
62 Correct 358 ms 57172 KB Output is correct
63 Correct 330 ms 55364 KB Output is correct
64 Correct 314 ms 54408 KB Output is correct
65 Correct 355 ms 56144 KB Output is correct
66 Correct 290 ms 54448 KB Output is correct
67 Correct 311 ms 55572 KB Output is correct
68 Correct 298 ms 54348 KB Output is correct
69 Correct 299 ms 54120 KB Output is correct
70 Correct 310 ms 54356 KB Output is correct
71 Correct 270 ms 53636 KB Output is correct
72 Correct 317 ms 53924 KB Output is correct
73 Correct 300 ms 54100 KB Output is correct
74 Correct 290 ms 54792 KB Output is correct
75 Correct 288 ms 55124 KB Output is correct
76 Correct 61 ms 15748 KB Output is correct
77 Correct 290 ms 54572 KB Output is correct
78 Correct 263 ms 50512 KB Output is correct
79 Correct 1 ms 10588 KB Output is correct
80 Correct 1 ms 10704 KB Output is correct