QOJ.ac
QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#566711 | #9309. Graph | 2016gdgzoi471 | AC ✓ | 296ms | 25492kb | C++14 | 1.5kb | 2024-09-16 01:17:49 | 2024-09-16 01:17:54 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long long ll;
const int N=1000005;
ll n,w[N],g[N];
int sq,tot,m,p[N],id1[N],id2[N];
bool vis[N];
void init(){
sq=sqrt(n);
for(int i=2;i<=sq;i++){
if(!vis[i]){
p[++tot]=i;
}
for(int j=1;j<=tot&&i*p[j]<=sq;j++){
vis[i*p[j]]=true;
if(i%p[j]==0){
break;
}
}
}
for(ll i=1,nxt;i<=n;i=nxt+1){
nxt=n/(n/i);
w[++m]=n/i;
if(w[m]<=sq){
id1[w[m]]=m;
}else{
id2[n/w[m]]=m;
}
g[m]=w[m]-1;
}
for(int j=1;j<=tot;j++){
ll sqr=1LL*p[j]*p[j];
for(int i=1;i<=m&&w[i]>=sqr;i++){
ll tmp=w[i]/p[j];
tmp=tmp<=sq?id1[tmp]:id2[n/tmp];
g[i]-=g[tmp]-j+1;
}
}
}
const int mod=998244353;
int fastpow(int a,ll x){
int res=1;
while(x){
if(x&1){
res=1LL*res*a%mod;
}
x>>=1;
a=1LL*a*a%mod;
}
return res;
}
int P(ll x){
return x<=sq?g[id1[x]]:g[id2[n/x]];
}
ll F(ll x){
return P(n/x)-P(n/x/2)+1;
}
int main(){
scanf("%lld",&n);
if(n<=2){
puts("1");
return 0;
}
init();
int ans=1;
for(ll i=1,j,nxt;i<=n;i=nxt+1){
j=n/i,nxt=n/j;
ll vf=F(i);
// printf("%lld %lld\n",i,vf);
if(vf==j){
if(j>1){
ans=1LL*ans*fastpow(fastpow(j%mod,j-2),nxt-i+1)%mod;
}
}else{
ans=1LL*ans*fastpow(1LL*fastpow(j%mod,vf-1)*((j-vf)%mod)%mod,nxt-i+1)%mod;
}
// printf("%lld\n",ans);
}
printf("%d\n",ans);
return 0;
}
这程序好像有点Bug,我给组数据试试?
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 9940kb
input:
4
output:
8
result:
ok answer is '8'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3856kb
input:
2
output:
1
result:
ok answer is '1'
Test #3:
score: 0
Accepted
time: 2ms
memory: 12132kb
input:
123
output:
671840470
result:
ok answer is '671840470'
Test #4:
score: 0
Accepted
time: 0ms
memory: 12168kb
input:
233
output:
353738465
result:
ok answer is '353738465'
Test #5:
score: 0
Accepted
time: 2ms
memory: 12180kb
input:
5981
output:
970246821
result:
ok answer is '970246821'
Test #6:
score: 0
Accepted
time: 0ms
memory: 10108kb
input:
86422
output:
897815688
result:
ok answer is '897815688'
Test #7:
score: 0
Accepted
time: 0ms
memory: 12072kb
input:
145444
output:
189843901
result:
ok answer is '189843901'
Test #8:
score: 0
Accepted
time: 2ms
memory: 12148kb
input:
901000
output:
819449452
result:
ok answer is '819449452'
Test #9:
score: 0
Accepted
time: 2ms
memory: 12128kb
input:
1000000
output:
113573943
result:
ok answer is '113573943'
Test #10:
score: 0
Accepted
time: 3ms
memory: 10088kb
input:
23333333
output:
949849384
result:
ok answer is '949849384'
Test #11:
score: 0
Accepted
time: 6ms
memory: 14268kb
input:
102850434
output:
604886751
result:
ok answer is '604886751'
Test #12:
score: 0
Accepted
time: 16ms
memory: 10792kb
input:
998244353
output:
0
result:
ok answer is '0'
Test #13:
score: 0
Accepted
time: 12ms
memory: 10772kb
input:
1000000007
output:
318420284
result:
ok answer is '318420284'
Test #14:
score: 0
Accepted
time: 21ms
memory: 11096kb
input:
2147483547
output:
688759898
result:
ok answer is '688759898'
Test #15:
score: 0
Accepted
time: 42ms
memory: 18732kb
input:
5120103302
output:
116870489
result:
ok answer is '116870489'
Test #16:
score: 0
Accepted
time: 98ms
memory: 17792kb
input:
19834593299
output:
523663743
result:
ok answer is '523663743'
Test #17:
score: 0
Accepted
time: 185ms
memory: 23084kb
input:
52500109238
output:
195086665
result:
ok answer is '195086665'
Test #18:
score: 0
Accepted
time: 263ms
memory: 24688kb
input:
84848352911
output:
107959260
result:
ok answer is '107959260'
Test #19:
score: 0
Accepted
time: 295ms
memory: 24792kb
input:
99824435322
output:
0
result:
ok answer is '0'
Test #20:
score: 0
Accepted
time: 296ms
memory: 24744kb
input:
99999999354
output:
316301711
result:
ok answer is '316301711'
Test #21:
score: 0
Accepted
time: 296ms
memory: 25492kb
input:
100000000000
output:
396843576
result:
ok answer is '396843576'
Extra Test:
score: 0
Extra Test Passed