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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#601356 | #9309. Graph | Ashbourne | WA | 40ms | 19260kb | C++14 | 1.6kb | 2024-09-29 22:30:28 | 2024-09-29 22:30:28 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define rep(i, j, k) for(int i = j; i <= k; ++ i)
#define drp(i, j, k) for(int i = j; i >= k; -- i)
const int N = 4e5 + 10, Mod = 998244353;
int fpow(int a, int b){
int x = 1;
while(b){
if(b & 1) x = x * a % Mod;
a = a * a % Mod;
b >>= 1;
}
return x;
}
int inv2;
int pri[N], ispri[N], b[N][2], c[N], g[N], w[N], P, E;
void prpr(int n){
inv2 = fpow(2, Mod - 2);
rep(i, 1, n) ispri[i] = 1;
rep(i, 2, n){
if(ispri[i]){
pri[++P] = i;
c[P] = (c[P - 1] + 1);
}
rep(j, 1, P){
if(i * pri[j] > n) break;
ispri[i * pri[j]] = 0;
if(i % pri[j] == 0) break;
}
}
}
int ans = 1, z[N];
#define id(x) (x <= E ? b[x][0]: b[n / (x)][1])
void calc(int n){
E = sqrt(n);
int t = 0, l = 1, r, q;
for(; l <= n; l = r + 1){
q = w[id(n / l) = ++ t] = n / l; r = (n / q);
z[t] = (r - l + 1);
int num = w[t] % Mod;
g[t] = num + Mod - 1;
g[t] %= Mod;
// g[t] = (g[t] + Mod - 1) % Mod;
}
// rep(i, 1, t) cout << g[i] << endl;
// t--;
rep(i, 1, P) rep(j, 1, t){
if(pri[i] * pri[i] > w[j]) break;
q = id(w[j] / pri[i]);
g[j] = (g[j] - g[q] + c[i - 1] + Mod) % Mod;
}
rep(i, 1, t){
q = id(w[i] / 2);
g[i] = (g[i] - g[q] + Mod) % Mod;
}
// rep(i, 1, t) cout << g[i] << endl;
rep(i, 1, t - 1){
int m = w[i];
int f_tt = (m - g[i] - 1) * fpow(m, g[i]) % Mod;
if(f_tt == 0) f_tt = fpow(m, g[i] - 1) % Mod;
// cout << f_tt << endl;
ans = ans * fpow(f_tt, z[i]) % Mod;
}
cout << ans << endl;
}
signed main(){
ios::sync_with_stdio(0);
prpr(4e5);
int n; cin >> n;
calc(n);
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 4ms
memory: 14284kb
input:
4
output:
8
result:
ok answer is '8'
Test #2:
score: 0
Accepted
time: 3ms
memory: 14076kb
input:
2
output:
1
result:
ok answer is '1'
Test #3:
score: 0
Accepted
time: 3ms
memory: 12048kb
input:
123
output:
671840470
result:
ok answer is '671840470'
Test #4:
score: 0
Accepted
time: 3ms
memory: 14244kb
input:
233
output:
353738465
result:
ok answer is '353738465'
Test #5:
score: 0
Accepted
time: 3ms
memory: 14116kb
input:
5981
output:
970246821
result:
ok answer is '970246821'
Test #6:
score: 0
Accepted
time: 3ms
memory: 14036kb
input:
86422
output:
897815688
result:
ok answer is '897815688'
Test #7:
score: 0
Accepted
time: 3ms
memory: 12124kb
input:
145444
output:
189843901
result:
ok answer is '189843901'
Test #8:
score: 0
Accepted
time: 3ms
memory: 12076kb
input:
901000
output:
819449452
result:
ok answer is '819449452'
Test #9:
score: 0
Accepted
time: 3ms
memory: 14192kb
input:
1000000
output:
113573943
result:
ok answer is '113573943'
Test #10:
score: 0
Accepted
time: 2ms
memory: 12204kb
input:
23333333
output:
949849384
result:
ok answer is '949849384'
Test #11:
score: 0
Accepted
time: 3ms
memory: 14396kb
input:
102850434
output:
604886751
result:
ok answer is '604886751'
Test #12:
score: 0
Accepted
time: 17ms
memory: 15108kb
input:
998244353
output:
0
result:
ok answer is '0'
Test #13:
score: 0
Accepted
time: 17ms
memory: 17016kb
input:
1000000007
output:
318420284
result:
ok answer is '318420284'
Test #14:
score: 0
Accepted
time: 23ms
memory: 19260kb
input:
2147483547
output:
688759898
result:
ok answer is '688759898'
Test #15:
score: -100
Wrong Answer
time: 40ms
memory: 17536kb
input:
5120103302
output:
406301251
result:
wrong answer expected '116870489', found '406301251'