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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#578981#9309. GraphSSL_TJHAC ✓290ms30504kbC++141.7kb2024-09-21 00:21:252024-09-21 00:21:25

Judging History

你现在查看的是最新测评结果

  • [2024-09-21 00:21:25]
  • 评测
  • 测评结果:AC
  • 用时:290ms
  • 内存:30504kb
  • [2024-09-21 00:21:25]
  • 提交

answer

#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
#define MOD 998244353
#define ll long long
using namespace std;

const ll MAXN=1e11;
const int N=1e6;
// SQRN is exactly floor(sqrt(n)), PNUM is the number of primes not greater than SQRN

int POW(int x, int y) {
	int re = 1;
	while (y) {
		if (y & 1) re = 1ll * re * x % MOD;
		x = 1ll * x * x % MOD; y >>= 1;
	}
	return re;
}

int p1,vt,z[N+5],pr[N+5],f[2][N+5],x,s[N+5],g[N+5];
long long n,v[N+5];
void dd(){
	for(int i=2;i<=N;i++){
		if(!z[i]){
			pr[++p1]=i;
			s[p1]=p1;
		}
		for(int j=1;j<=p1&&i*pr[j]<=N;j++){
			z[i*pr[j]]=1;
			if(i%pr[j]==0) break;
		}
	}
}
void init(){
	x=sqrt(n)+1;
	vt = 0;
	for(long long l=1,r;l<=n;l=r+1){
		r=n/(n/l);
		v[++vt]=n/l;
		if(n/l<=x) f[0][n/l]=vt;
		else f[1][l]=vt;
		long long t=n/l;
		g[vt]=t-1;
	}
	long long w;
	for(int i=1;i<=p1;i++){
		w=1ll*pr[i]*pr[i];
		long long t;
		for(int j=1;j<=vt&&w<=v[j];j++){
			t=v[j]/pr[i];
			if(t<=x) t=f[0][t];
			else t=f[1][n/t];
			g[j]-=g[t]-s[i-1];
		}
	}
}

int quest(ll p) {
	int td=(p<=x?f[0][p]:f[1][n/p]);
	return g[td];
}

int main() {
	dd();
	ll nn;
	
	scanf("%lld", &nn);
	n = nn; init();
	
	if (nn == 2) {
		printf("1"); return 0;
	}
	if (nn == 3) {
		printf("3"); return 0;
	}
	
	int re = 1;
	for (ll L = 1, R; L <= nn; L = R + 1) {
		R = nn / (nn / L);
		ll k = nn / L;
		if (k < 3) continue;
		if (k == 3) {
			re = 1ll * re * POW(3, (R - L + 1) % (MOD - 1)) % MOD;
			continue;
		}
		int awa = quest(k) - quest(k / 2);
		re = 1ll * re * POW((k - awa - 1) % MOD * POW(k % MOD, awa) % MOD, (R - L + 1) % (MOD - 1)) % MOD;//k-awa-1: sz of the block where 2 in 
	}
	printf("%d", re);
}

这程序好像有点Bug,我给组数据试试?

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 17960kb

input:

4

output:

8

result:

ok answer is '8'

Test #2:

score: 0
Accepted
time: 6ms
memory: 15800kb

input:

2

output:

1

result:

ok answer is '1'

Test #3:

score: 0
Accepted
time: 6ms
memory: 18000kb

input:

123

output:

671840470

result:

ok answer is '671840470'

Test #4:

score: 0
Accepted
time: 3ms
memory: 20104kb

input:

233

output:

353738465

result:

ok answer is '353738465'

Test #5:

score: 0
Accepted
time: 3ms
memory: 17964kb

input:

5981

output:

970246821

result:

ok answer is '970246821'

Test #6:

score: 0
Accepted
time: 3ms
memory: 18096kb

input:

86422

output:

897815688

result:

ok answer is '897815688'

Test #7:

score: 0
Accepted
time: 3ms
memory: 18060kb

input:

145444

output:

189843901

result:

ok answer is '189843901'

Test #8:

score: 0
Accepted
time: 3ms
memory: 19904kb

input:

901000

output:

819449452

result:

ok answer is '819449452'

Test #9:

score: 0
Accepted
time: 3ms
memory: 18068kb

input:

1000000

output:

113573943

result:

ok answer is '113573943'

Test #10:

score: 0
Accepted
time: 5ms
memory: 20180kb

input:

23333333

output:

949849384

result:

ok answer is '949849384'

Test #11:

score: 0
Accepted
time: 6ms
memory: 18272kb

input:

102850434

output:

604886751

result:

ok answer is '604886751'

Test #12:

score: 0
Accepted
time: 20ms
memory: 18384kb

input:

998244353

output:

0

result:

ok answer is '0'

Test #13:

score: 0
Accepted
time: 22ms
memory: 22484kb

input:

1000000007

output:

318420284

result:

ok answer is '318420284'

Test #14:

score: 0
Accepted
time: 22ms
memory: 20668kb

input:

2147483547

output:

688759898

result:

ok answer is '688759898'

Test #15:

score: 0
Accepted
time: 43ms
memory: 20580kb

input:

5120103302

output:

116870489

result:

ok answer is '116870489'

Test #16:

score: 0
Accepted
time: 101ms
memory: 27752kb

input:

19834593299

output:

523663743

result:

ok answer is '523663743'

Test #17:

score: 0
Accepted
time: 187ms
memory: 29624kb

input:

52500109238

output:

195086665

result:

ok answer is '195086665'

Test #18:

score: 0
Accepted
time: 262ms
memory: 30504kb

input:

84848352911

output:

107959260

result:

ok answer is '107959260'

Test #19:

score: 0
Accepted
time: 290ms
memory: 30120kb

input:

99824435322

output:

0

result:

ok answer is '0'

Test #20:

score: 0
Accepted
time: 288ms
memory: 27240kb

input:

99999999354

output:

316301711

result:

ok answer is '316301711'

Test #21:

score: 0
Accepted
time: 288ms
memory: 29436kb

input:

100000000000

output:

396843576

result:

ok answer is '396843576'

Extra Test:

score: 0
Extra Test Passed