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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
#735763#9479. And DNAHuTaoAC ✓0ms4100kbC++141.2kb2024-11-11 21:35:312024-11-11 21:35:32

Judging History

你现在查看的是最新测评结果

  • [2024-11-11 21:35:32]
  • 评测
  • 测评结果:AC
  • 用时:0ms
  • 内存:4100kb
  • [2024-11-11 21:35:31]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;

typedef long long LL;

const int P = 998244353;

LL a[3][3], b[3];

inline void Mul(LL a[][3], LL b[][3], LL c[][3])
{
	static LL t[3][3];
	memset(t, 0, sizeof t);
	for(int i = 0; i < 3; i ++ )
		for(int j = 0; j < 3; j ++ )
			for(int k = 0; k < 3; k ++ )
				t[i][k] = (t[i][k] + a[i][j] * b[j][k]) % P;
	memcpy(c, t, sizeof t);
}
inline void Mul(LL a[], LL b[][3], LL c[])
{
	static LL t[3];
	memset(t, 0, sizeof t);
	for(int i = 0; i < 3; i ++ )
		for(int j = 0; j < 3; j ++ )
			t[j] = (t[j] + a[i] * b[i][j]) % P;
	memcpy(c, t, sizeof t);
}
inline LL ksm(LL n)
{
	memset(a, 0, sizeof a);
	memset(b, 0, sizeof b);
	a[0][1] = a[1][2] = a[1][0] = a[2][0] = 1;
	b[0] = 1;
	while(n)
	{
		if(n & 1) Mul(b, a, b);
		Mul(a, a, a);
		n >>= 1;
	}
	return b[0];
}
LL g;

unordered_map<int, LL> f;

inline LL DP(int m)
{
	if(m == 0) return 1;
	if(f.count(m)) return f[m];
	if(m & 1) return f[m] = DP(m >> 1) * g % P;
	else return f[m] = (DP((m >> 1) - 1) + DP(m >> 1)) % P;
}

int main()
{
	int n, m;
	scanf("%d%d", &n, &m);
	g = (ksm(n) * 2 + ksm(n - 3)) % P;
	// printf("!%lld\n", g);
	printf("%lld\n", DP(m));
	return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3812kb

input:

3 2

output:

4

result:

ok "4"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

3 0

output:

1

result:

ok "1"

Test #3:

score: 0
Accepted
time: 0ms
memory: 3800kb

input:

100 100

output:

343406454

result:

ok "343406454"

Test #4:

score: 0
Accepted
time: 0ms
memory: 3828kb

input:

686579306 119540831

output:

260602195

result:

ok "260602195"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3852kb

input:

26855095 796233790

output:

492736984

result:

ok "492736984"

Test #6:

score: 0
Accepted
time: 0ms
memory: 4096kb

input:

295310488 262950628

output:

503008241

result:

ok "503008241"

Test #7:

score: 0
Accepted
time: 0ms
memory: 3764kb

input:

239670714 149827706

output:

994702969

result:

ok "994702969"

Test #8:

score: 0
Accepted
time: 0ms
memory: 4076kb

input:

790779949 110053353

output:

898252188

result:

ok "898252188"

Test #9:

score: 0
Accepted
time: 0ms
memory: 3740kb

input:

726600542 795285932

output:

183726777

result:

ok "183726777"

Test #10:

score: 0
Accepted
time: 0ms
memory: 3824kb

input:

957970519 585582861

output:

298814018

result:

ok "298814018"

Test #11:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

93349859 634036506

output:

110693443

result:

ok "110693443"

Test #12:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

453035113 34126396

output:

306244220

result:

ok "306244220"

Test #13:

score: 0
Accepted
time: 0ms
memory: 4100kb

input:

31994526 100604502

output:

930620701

result:

ok "930620701"

Test #14:

score: 0
Accepted
time: 0ms
memory: 3868kb

input:

234760741 249817734

output:

440195858

result:

ok "440195858"

Test #15:

score: 0
Accepted
time: 0ms
memory: 3832kb

input:

542621111 646412689

output:

207377992

result:

ok "207377992"

Test #16:

score: 0
Accepted
time: 0ms
memory: 3760kb

input:

28492783 602632297

output:

65234506

result:

ok "65234506"

Test #17:

score: 0
Accepted
time: 0ms
memory: 3796kb

input:

213500301 768820204

output:

540205113

result:

ok "540205113"

Test #18:

score: 0
Accepted
time: 0ms
memory: 3800kb

input:

697808101 753041955

output:

93561295

result:

ok "93561295"

Test #19:

score: 0
Accepted
time: 0ms
memory: 3824kb

input:

585126464 450455977

output:

91109717

result:

ok "91109717"

Test #20:

score: 0
Accepted
time: 0ms
memory: 3800kb

input:

236696315 482334538

output:

925575199

result:

ok "925575199"

Test #21:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

632719214 298704996

output:

358926097

result:

ok "358926097"

Test #22:

score: 0
Accepted
time: 0ms
memory: 3784kb

input:

869119333 933404114

output:

318501108

result:

ok "318501108"

Test #23:

score: 0
Accepted
time: 0ms
memory: 4096kb

input:

6977994 814763202

output:

585332987

result:

ok "585332987"

Test #24:

score: 0
Accepted
time: 0ms
memory: 4096kb

input:

3 1

output:

3

result:

ok "3"

Test #25:

score: 0
Accepted
time: 0ms
memory: 3796kb

input:

3 1000000000

output:

279679226

result:

ok "279679226"

Test #26:

score: 0
Accepted
time: 0ms
memory: 4080kb

input:

4 0

output:

1

result:

ok "1"

Test #27:

score: 0
Accepted
time: 0ms
memory: 3796kb

input:

4 1

output:

2

result:

ok "2"

Test #28:

score: 0
Accepted
time: 0ms
memory: 4092kb

input:

4 1000000000

output:

1755648

result:

ok "1755648"

Test #29:

score: 0
Accepted
time: 0ms
memory: 3796kb

input:

1000000000 0

output:

1

result:

ok "1"

Test #30:

score: 0
Accepted
time: 0ms
memory: 3844kb

input:

1000000000 1

output:

696798313

result:

ok "696798313"

Test #31:

score: 0
Accepted
time: 0ms
memory: 3792kb

input:

1000000000 1000000000

output:

703786301

result:

ok "703786301"

Extra Test:

score: 0
Extra Test Passed