QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#568477 | #9309. Graph | wyxqwq | TL | 1903ms | 5248kb | C++14 | 4.0kb | 2024-09-16 16:41:19 | 2024-09-16 16:41:20 |
Judging History
answer
#include<bits/stdc++.h>
#define re return
#define ll long long
#define fo(i,x,y) for(int i=x;i<=y;++i)
#define go(i,x,y) for(int i=x;i>=y;--i)
using namespace std;
int read(){
int res=0,zf=1;char ch;
while((ch=getchar())<48||ch>57)if(ch=='-')zf=!zf;res=(ch^48);
while((ch=getchar())>=48&&ch<=57)res=(res<<3)+(res<<1)+(ch^48);
return zf?res:(-res);
}
const int mod=998244353;
#define pro(x,y) (int)((ll)(x)*(y)%mod)
#define mul(x,y) x=pro(x,y)
int ksm(int x,ll y){
int ret=1;
while(y){
if(y&1) mul(ret,x);
mul(x,x);
y>>=1;
}
re ret;
}
namespace Prime{
using i64 = long long;
i64 PI(i64 N) {
if(N <= 1) return 0;
int v = sqrt(N + 0.5);
int n_4 = sqrt(v + 0.5);
int T = min((int)sqrt(n_4) * 2, n_4);
int K = pow(N, 0.625) / log(N) * 2;
K = max(K, v);
K = min<i64>(K, N);
int B = N / K;
B = N / (N / B);
B = min<i64>(N / (N / B), K);
vector<i64> l(v + 1);
vector<int> s(K + 1);
vector<bool> e(K + 1);
vector<int> w(K + 1);
for (int i = 1; i <= v; ++i) l[i] = N / i - 1;
for (int i = 1; i <= v; ++i) s[i] = i - 1;
const auto div = [] (i64 n, int d) -> int { return double(n) / d; };
int p;
for (p = 2; p <= T; ++p)
if (s[p] != s[p - 1]) {
i64 M = N / p;
int t = v / p, t0 = s[p - 1];
for (int i = 1; i <= t; ++i) l[i] -= l[i * p] - t0;
for (int i = t + 1; i <= v; ++i) l[i] -= s[div(M, i)] - t0;
for (int i = v, j = t; j >= p; --j)
for (int l = j * p; i >= l; --i)
s[i] -= s[j] - t0;
for (int i = p * p; i <= K; i += p) e[i] = 1;
}
e[1] = 1;
int cnt = 1;
vector<int> roughs(B + 1);
for (int i = 1; i <= B; ++i)
if(!e[i]) roughs[cnt++] = i;
roughs[cnt] = 0x7fffffff;
for (int i = 1; i <= K; ++i) w[i] = e[i] + w[i - 1];
for (int i = 1; i <= K; ++i) s[i] = w[i] - w[i - (i & -i)];
const auto query = [&] (int x) -> int {
int sum = x;
while(x) sum -= s[x], x ^= x & -x;
return sum;
};
const auto add = [&] (int x) -> void {
e[x] = 1;
while(x <= K) ++s[x], x += x & -x;
};
cnt = 1;
for (; p <= n_4; ++p)
if(!e[p]) {
i64 q = i64(p) * p, M = N / p;
while(cnt < q) w[cnt] = query(cnt), cnt++;
int t1 = B / p, t2 = min<i64>(B, M / q), t0 = query(p - 1);
int id = 1, i = 1;
for (; i <= t1; i = roughs[++id]) l[i] -= l[i * p] - t0;
for (; i <= t2; i = roughs[++id]) l[i] -= query(div(M, i)) - t0;
for (; i <= B; i = roughs[++id]) l[i] -= w[div(M, i)] - t0;
for (int i = q; i <= K; i += p)
if(!e[i]) add(i);
}
while(cnt <= v) w[cnt] = query(cnt), cnt++;
vector<int> primes;
primes.push_back(1);
for (int i = 2; i <= v; ++i)
if(!e[i]) primes.push_back(i);
l[1] += i64(w[v] + w[n_4] - 1) * (w[v] - w[n_4]) / 2;
for (int i = w[n_4] + 1; i <= w[B]; ++i) l[1] -= l[primes[i]];
for (int i = w[B] + 1; i <= w[v]; ++i) l[1] -= query(N / primes[i]);
for (int i = w[n_4] + 1; i <= w[v]; ++i) {
int q = primes[i];
i64 M = N / q;
int e = w[M / q];
if (e <= i) break;
l[1] += e - i;
i64 t = 0;
int m = w[sqrt(M + 0.5)];
for (int k = i + 1; k <= m; ++k) t += w[div(M, primes[k])];
l[1] += 2 * t - (i + m) * (m - i);
}
return l[1];
}
}
using Prime::PI;
ll h(ll x){re PI(x)-PI(x/2);}
int F(ll x){
if(x==1) re 1;
// printf("F(%lld)\n",x);
ll a=h(x);
// printf("h(%lld)=%lld\n",x,a);
if(a+1==x) re ksm((int)(x%mod),x-2);
re pro(ksm((int)(x%mod),a),x-a-1);
}
signed main(){
ll n,ans=1;cin>>n;
for(ll l=1,r=1;;){
// printf("[%lld,%lld]\n",l,r);
mul(ans,ksm(F(n/l),r-l+1));
l=r+1;
if(l>n) break;
r=n/(n/l);
}
cout<<ans;
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 3932kb
input:
4
output:
8
result:
ok answer is '8'
Test #2:
score: 0
Accepted
time: 1ms
memory: 3860kb
input:
2
output:
1
result:
ok answer is '1'
Test #3:
score: 0
Accepted
time: 1ms
memory: 4004kb
input:
123
output:
671840470
result:
ok answer is '671840470'
Test #4:
score: 0
Accepted
time: 1ms
memory: 3860kb
input:
233
output:
353738465
result:
ok answer is '353738465'
Test #5:
score: 0
Accepted
time: 1ms
memory: 3924kb
input:
5981
output:
970246821
result:
ok answer is '970246821'
Test #6:
score: 0
Accepted
time: 1ms
memory: 4028kb
input:
86422
output:
897815688
result:
ok answer is '897815688'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3876kb
input:
145444
output:
189843901
result:
ok answer is '189843901'
Test #8:
score: 0
Accepted
time: 4ms
memory: 4144kb
input:
901000
output:
819449452
result:
ok answer is '819449452'
Test #9:
score: 0
Accepted
time: 4ms
memory: 3980kb
input:
1000000
output:
113573943
result:
ok answer is '113573943'
Test #10:
score: 0
Accepted
time: 31ms
memory: 4012kb
input:
23333333
output:
949849384
result:
ok answer is '949849384'
Test #11:
score: 0
Accepted
time: 95ms
memory: 4148kb
input:
102850434
output:
604886751
result:
ok answer is '604886751'
Test #12:
score: 0
Accepted
time: 536ms
memory: 4264kb
input:
998244353
output:
0
result:
ok answer is '0'
Test #13:
score: 0
Accepted
time: 539ms
memory: 4240kb
input:
1000000007
output:
318420284
result:
ok answer is '318420284'
Test #14:
score: 0
Accepted
time: 966ms
memory: 4616kb
input:
2147483547
output:
688759898
result:
ok answer is '688759898'
Test #15:
score: 0
Accepted
time: 1903ms
memory: 5248kb
input:
5120103302
output:
116870489
result:
ok answer is '116870489'
Test #16:
score: -100
Time Limit Exceeded
input:
19834593299