QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#620411 | #9309. Graph | sz051 | AC ✓ | 443ms | 14224kb | C++20 | 1.7kb | 2024-10-07 18:01:11 | 2024-10-07 18:01:12 |
Judging History
answer
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <vector>
#include <bitset>
#include <queue>
#include <cassert>
#define int long long
using namespace std;
const int md=998244353,B=320000;
void read(int &x){
x=0;
int f=1;
char c=getchar();
while(!('0'<=c && c<='9')){
if(c=='-'){
f=-1;
}
c=getchar();
}
while('0'<=c && c<='9'){
x=(x<<3)+(x<<1)+(c^48);
c=getchar();
}
x*=f;
}
int powr(int b,int k){
b%=md;
int res=1;
for(;k;k>>=1,b=b*b%md){
if(k&1){
res=res*b%md;
}
}
return res;
}
int ps[100010],cnt=0;
bool isp[1000010];
void sieve(int n){
memset(isp,1,sizeof(isp));
isp[0]=isp[1]=0;
for(int i=2;i<=n;i++){
if(isp[i]){
ps[++cnt]=i;
}
for(int j=1;j<=cnt && ps[j]*i<=n;j++){
isp[ps[j]*i]=0;
if(i%ps[j]==0){
break;
}
}
}
}
int n,sum1[1000010],sum2[1000010];
int getres(int k){
if(n/k<=2){
return 1;
}else if(n/k==3){
return 3;
}else{
int cur=(n/k<=B?sum1[n/k]:sum2[k])-(n/(2*k)<=B?sum1[n/(2*k)]:sum2[2*k]);
return (n/k-cur-1)%md*powr(n/k,cur)%md;
}
}
signed main(){
sieve(B);
read(n);
for(int i=1;i<=min(B,n);i++){
sum1[i]=i-1;
}
for(int i=1;i<=B;i++){
if(n/i<=B){
break;
}
sum2[i]=n/i-1;
}
for(int j=1;j<=cnt;j++){
int p=ps[j];
if(p*p>n){
break;
}
for(int i=1;i<=B;i++){
if(n/i<=B){
break;
}
int v=n/i;
if(p*p>v){
break;
}
sum2[i]-=(v/p<=B?sum1[v/p]:sum2[i*p])-j+1;
}
for(int i=B;i;i--){
if(p*p>i){
break;
}
sum1[i]-=sum1[i/p]-j+1;
}
}
int res=1;
for(int l=1,r;l<=n;l=r+1){
r=n/(n/l);
res=res*powr(getres(l),r-l+1)%md;
}
printf("%lld",res);
return 0;
}
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: 4ms
memory: 10280kb
input:
4
output:
8
result:
ok answer is '8'
Test #2:
score: 0
Accepted
time: 2ms
memory: 5664kb
input:
2
output:
1
result:
ok answer is '1'
Test #3:
score: 0
Accepted
time: 3ms
memory: 6788kb
input:
123
output:
671840470
result:
ok answer is '671840470'
Test #4:
score: 0
Accepted
time: 4ms
memory: 7036kb
input:
233
output:
353738465
result:
ok answer is '353738465'
Test #5:
score: 0
Accepted
time: 18ms
memory: 6824kb
input:
5981
output:
970246821
result:
ok answer is '970246821'
Test #6:
score: 0
Accepted
time: 55ms
memory: 10436kb
input:
86422
output:
897815688
result:
ok answer is '897815688'
Test #7:
score: 0
Accepted
time: 58ms
memory: 10292kb
input:
145444
output:
189843901
result:
ok answer is '189843901'
Test #8:
score: 0
Accepted
time: 70ms
memory: 7644kb
input:
901000
output:
819449452
result:
ok answer is '819449452'
Test #9:
score: 0
Accepted
time: 70ms
memory: 7620kb
input:
1000000
output:
113573943
result:
ok answer is '113573943'
Test #10:
score: 0
Accepted
time: 71ms
memory: 6800kb
input:
23333333
output:
949849384
result:
ok answer is '949849384'
Test #11:
score: 0
Accepted
time: 72ms
memory: 7656kb
input:
102850434
output:
604886751
result:
ok answer is '604886751'
Test #12:
score: 0
Accepted
time: 73ms
memory: 6820kb
input:
998244353
output:
0
result:
ok answer is '0'
Test #13:
score: 0
Accepted
time: 78ms
memory: 7748kb
input:
1000000007
output:
318420284
result:
ok answer is '318420284'
Test #14:
score: 0
Accepted
time: 83ms
memory: 8004kb
input:
2147483547
output:
688759898
result:
ok answer is '688759898'
Test #15:
score: 0
Accepted
time: 92ms
memory: 10212kb
input:
5120103302
output:
116870489
result:
ok answer is '116870489'
Test #16:
score: 0
Accepted
time: 150ms
memory: 8180kb
input:
19834593299
output:
523663743
result:
ok answer is '523663743'
Test #17:
score: 0
Accepted
time: 274ms
memory: 10232kb
input:
52500109238
output:
195086665
result:
ok answer is '195086665'
Test #18:
score: 0
Accepted
time: 390ms
memory: 14224kb
input:
84848352911
output:
107959260
result:
ok answer is '107959260'
Test #19:
score: 0
Accepted
time: 439ms
memory: 12088kb
input:
99824435322
output:
0
result:
ok answer is '0'
Test #20:
score: 0
Accepted
time: 439ms
memory: 14196kb
input:
99999999354
output:
316301711
result:
ok answer is '316301711'
Test #21:
score: 0
Accepted
time: 443ms
memory: 10288kb
input:
100000000000
output:
396843576
result:
ok answer is '396843576'
Extra Test:
score: 0
Extra Test Passed