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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#621126#9309. GraphGalexWA 15ms12232kbC++141.5kb2024-10-08 09:32:212024-10-08 09:32:22

Judging History

你现在查看的是最新测评结果

  • [2024-10-08 09:32:22]
  • 评测
  • 测评结果:WA
  • 用时:15ms
  • 内存:12232kb
  • [2024-10-08 09:32:21]
  • 提交

answer

#include <bits/stdc++.h>
#define LL long long
using namespace std;

int read() {
	int s = 0, f = 1;
	char ch = getchar();
	while (ch < '0' || ch > '9')
		f = (ch == '-' ? -1 : 1), ch = getchar();
	while (ch >= '0' && ch <= '9')
		s = (s << 1) + (s << 3) + (ch ^ 48), ch = getchar();
	return s * f;
}

const int MAXN = 1e6 + 5, mod = 998244353;

int qpow(int a, LL b) {
	int res = 1;
	while (b) {
		if (b & 1)
			res = 1ll * res * a % mod;
		a = 1ll * a * a % mod, b >>= 1;
	}
	return res;
}

LL n, N;

bool vis[MAXN];
int pr[MAXN], tot = 0;

int m, v[MAXN];
LL g1[MAXN];
int id1[MAXN], id2[MAXN];

void szs() {
	for (int i = 2; i <= N; i++) {
		if (!vis[i])
			pr[++tot] = i;
		for (int j = 1; i * pr[j] <= N; j++) {
			vis[i * pr[j]] = true;
			if (i % pr[j] == 0)
				break;
		}
	}
}

int id(LL x) {
	return x <= N ? id1[x] : id2[n / x];
}

int calc(LL m) {
	if (m <= 2) return 1;
	if (m == 3) return 3;
	LL c = g1[id(m)] - g1[id(m / 2)];
	return 1ll * qpow(m % mod, c) * ((m - c - 1 + mod) % mod) % mod;
}

signed main() {
	n = read(), N = sqrt(n);
	szs();
	for (int l = 1, r; l <= n; l = r + 1) {
		r = n / (n / l), v[++m] = n / l;
		g1[m] = n / l - 1;
		v[m] <= N ? id1[v[m]] = m : id2[n / v[m]] = m;
	}
	for (int i = 1; i <= tot; i++)
		for (int j = 1; pr[i] * pr[i] <= v[j]; j++)
			g1[j] -= g1[id(v[j] / pr[i])] - (i - 1);
	int ans = 1;
	for (LL l = 1, r; l <= n; l = r + 1)
		r = n / (n / l), ans = 1ll * ans * qpow(calc(n / l), r - l + 1) % mod;
	printf("%d", ans);
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 2ms
memory: 9992kb

input:

4

output:

8

result:

ok answer is '8'

Test #2:

score: 0
Accepted
time: 0ms
memory: 9996kb

input:

2

output:

1

result:

ok answer is '1'

Test #3:

score: 0
Accepted
time: 2ms
memory: 9940kb

input:

123

output:

671840470

result:

ok answer is '671840470'

Test #4:

score: 0
Accepted
time: 0ms
memory: 9876kb

input:

233

output:

353738465

result:

ok answer is '353738465'

Test #5:

score: 0
Accepted
time: 2ms
memory: 10008kb

input:

5981

output:

970246821

result:

ok answer is '970246821'

Test #6:

score: 0
Accepted
time: 0ms
memory: 9876kb

input:

86422

output:

897815688

result:

ok answer is '897815688'

Test #7:

score: 0
Accepted
time: 2ms
memory: 10004kb

input:

145444

output:

189843901

result:

ok answer is '189843901'

Test #8:

score: 0
Accepted
time: 0ms
memory: 10004kb

input:

901000

output:

819449452

result:

ok answer is '819449452'

Test #9:

score: 0
Accepted
time: 0ms
memory: 9944kb

input:

1000000

output:

113573943

result:

ok answer is '113573943'

Test #10:

score: 0
Accepted
time: 0ms
memory: 11988kb

input:

23333333

output:

949849384

result:

ok answer is '949849384'

Test #11:

score: 0
Accepted
time: 4ms
memory: 10116kb

input:

102850434

output:

604886751

result:

ok answer is '604886751'

Test #12:

score: 0
Accepted
time: 12ms
memory: 10196kb

input:

998244353

output:

0

result:

ok answer is '0'

Test #13:

score: 0
Accepted
time: 12ms
memory: 10252kb

input:

1000000007

output:

318420284

result:

ok answer is '318420284'

Test #14:

score: 0
Accepted
time: 15ms
memory: 12232kb

input:

2147483547

output:

688759898

result:

ok answer is '688759898'

Test #15:

score: -100
Wrong Answer
time: 8ms
memory: 12132kb

input:

5120103302

output:

17492326

result:

wrong answer expected '116870489', found '17492326'