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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#272731#6753. Mediansmobbb#TL 1638ms137628kbC++171.3kb2023-12-02 18:54:322023-12-02 18:54:32

Judging History

你现在查看的是最新测评结果

  • [2023-12-02 18:54:32]
  • 评测
  • 测评结果:TL
  • 用时:1638ms
  • 内存:137628kb
  • [2023-12-02 18:54:32]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;

#define int long long

const int P = 998244353;

const int N = 1e7 + 7;

const int mod = 1e9 + 7;

int n;
int a[N];
int p[N];
signed main(){
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	cin >> n >> a[0];
	for (int i = 1;i <= n;i++){
		a[i] = (a[i - 1] % (mod + 2) * P % (mod + 2) + mod) % (mod + 2);
		p[i] = i;
	}
	for (int i = 1;i <= n;i++){
		swap(p[i],p[a[i] % i + 1]);
	}
	
	int res = 0;
	int cur = 1;
	// l.b x r.b
	set<int> r;
	set<int,greater<>> l;

	for (int i = 1;i <= n;i++){
		(cur *= 19) %= P;
		if (l.empty()){
			l.insert(p[i]);
		}else{
			if (*l.begin() < p[i]){
				r.insert(p[i]);
				if (r.size() - l.size() > 1){
					l.insert(*r.begin());
					r.erase(r.begin());
				}
			}else{
				l.insert(p[i]);
				if (l.size() - r.size() > 1){
					r.insert(*l.begin());
					l.erase(l.begin());
				}
			}
		}
		if (l.size() == r.size()){
			(res += *l.begin() % P * cur % P) %= P;
			//cout << *l.begin() << endl;
		}else{
			if (l.size() > r.size()){
				(res += *l.begin() % P * cur % P) %= P;	
				//cout << *l.begin() << endl;
			}else{
				(res += *r.begin() % P * cur % P) %= P;	
				//cout << *r.begin() << endl;
			}
		}
	}

	cout << res << endl;




	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 1ms
memory: 5472kb

input:

5 0

output:

7703113

result:

ok 1 number(s): "7703113"

Test #2:

score: 0
Accepted
time: 1ms
memory: 5504kb

input:

5 1

output:

7840977

result:

ok 1 number(s): "7840977"

Test #3:

score: 0
Accepted
time: 1ms
memory: 5440kb

input:

2 1361955

output:

399

result:

ok 1 number(s): "399"

Test #4:

score: 0
Accepted
time: 1ms
memory: 5480kb

input:

4 207579012

output:

274740

result:

ok 1 number(s): "274740"

Test #5:

score: 0
Accepted
time: 1ms
memory: 5460kb

input:

8 628145516

output:

783389330

result:

ok 1 number(s): "783389330"

Test #6:

score: 0
Accepted
time: 0ms
memory: 5468kb

input:

16 376140462

output:

772072366

result:

ok 1 number(s): "772072366"

Test #7:

score: 0
Accepted
time: 0ms
memory: 5460kb

input:

32 883515280

output:

822906393

result:

ok 1 number(s): "822906393"

Test #8:

score: 0
Accepted
time: 1ms
memory: 5488kb

input:

64 186969585

output:

536948870

result:

ok 1 number(s): "536948870"

Test #9:

score: 0
Accepted
time: 1ms
memory: 5576kb

input:

128 762888635

output:

914896632

result:

ok 1 number(s): "914896632"

Test #10:

score: 0
Accepted
time: 1ms
memory: 5516kb

input:

256 326402539

output:

816864808

result:

ok 1 number(s): "816864808"

Test #11:

score: 0
Accepted
time: 1ms
memory: 5464kb

input:

512 98152102

output:

792934555

result:

ok 1 number(s): "792934555"

Test #12:

score: 0
Accepted
time: 0ms
memory: 5496kb

input:

1024 158176572

output:

187304261

result:

ok 1 number(s): "187304261"

Test #13:

score: 0
Accepted
time: 1ms
memory: 5672kb

input:

2048 61402883

output:

881629018

result:

ok 1 number(s): "881629018"

Test #14:

score: 0
Accepted
time: 1ms
memory: 5700kb

input:

4096 127860889

output:

926052991

result:

ok 1 number(s): "926052991"

Test #15:

score: 0
Accepted
time: 2ms
memory: 5900kb

input:

8192 9580638

output:

18767865

result:

ok 1 number(s): "18767865"

Test #16:

score: 0
Accepted
time: 0ms
memory: 6468kb

input:

16384 570870044

output:

676635475

result:

ok 1 number(s): "676635475"

Test #17:

score: 0
Accepted
time: 5ms
memory: 9196kb

input:

32768 646139319

output:

121314798

result:

ok 1 number(s): "121314798"

Test #18:

score: 0
Accepted
time: 16ms
memory: 9088kb

input:

65536 178509022

output:

518784793

result:

ok 1 number(s): "518784793"

Test #19:

score: 0
Accepted
time: 37ms
memory: 12644kb

input:

131072 484027666

output:

783563468

result:

ok 1 number(s): "783563468"

Test #20:

score: 0
Accepted
time: 93ms
memory: 21904kb

input:

262144 61263304

output:

560815556

result:

ok 1 number(s): "560815556"

Test #21:

score: 0
Accepted
time: 238ms
memory: 39728kb

input:

524288 841082555

output:

478037004

result:

ok 1 number(s): "478037004"

Test #22:

score: 0
Accepted
time: 622ms
memory: 72780kb

input:

1048576 558212774

output:

145045199

result:

ok 1 number(s): "145045199"

Test #23:

score: 0
Accepted
time: 1638ms
memory: 137628kb

input:

2097152 940563715

output:

267114566

result:

ok 1 number(s): "267114566"

Test #24:

score: -100
Time Limit Exceeded

input:

4194304 26389620

output:

535216368

result: