QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#177119 | #6740. Function | ucup-team870# | AC ✓ | 378ms | 6316kb | C++17 | 1.2kb | 2023-09-12 16:06:40 | 2023-09-12 16:06:41 |
Judging History
answer
#include <bits/stdc++.h>
#define rep(i,l,r) for(int i=l; i<=r; i++)
#define per(i,l,r) for(int i=l; i>=r; i--)
#define IOS {cin.tie(0);cout.tie(0);ios::sync_with_stdio(0);}
using namespace std;
typedef long long ll;
typedef pair<int,int> P;
const int N=1e6+6,mod=998244353;
unordered_map<int,int>res;
int crs(int l1,int r1){
return max(min(20210926,r1)-max(2,l1)+1,0);
}
int slv(int n){
if(res.count(n))return res[n];
int sq=sqrt(n);
vector<int>q(sq*2+2); int cnt=0;
rep(i,1,sq)q[++cnt]=i;
per(i,sq,2){
int v=n/i;
if(v!=q[cnt])q[++cnt]=v;
}
int ans=1;
rep(i,1,cnt){
int v=q[i];
ans=(ans+1ll*slv(v)*crs(n/(v+1)+1,n/v))%mod;
}
return res[n]=ans;
}
int main() {
IOS
int n;cin>>n;
res[1]=1;
cout<<slv(n);
// int sq=sqrt(n);
// rep(i,1,sq)q[++cnt]=i;
// per(i,sq,1){
// int v=n/i;
// if(v!=q[cnt])q[++cnt]=v;
// } //21175113
// rep(i,1,cnt){
// int n=q[i]; ll ans=1; //cout<<n<<'\n';
// rep(j,1,cnt-1){
// int v=q[j];
// ans=(ans+1ll*res[j]*crs(n/(v+1)+1,n/v))%mod;
// }
// res[i]=ans;
// }
// cout<<res[cnt];
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 3432kb
input:
1
output:
1
result:
ok 1 number(s): "1"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3540kb
input:
2
output:
2
result:
ok 1 number(s): "2"
Test #3:
score: 0
Accepted
time: 1ms
memory: 3508kb
input:
100
output:
949
result:
ok 1 number(s): "949"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3500kb
input:
10
output:
19
result:
ok 1 number(s): "19"
Test #5:
score: 0
Accepted
time: 1ms
memory: 3552kb
input:
1000
output:
48614
result:
ok 1 number(s): "48614"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3480kb
input:
10000
output:
2602393
result:
ok 1 number(s): "2602393"
Test #7:
score: 0
Accepted
time: 1ms
memory: 3556kb
input:
100000
output:
139804054
result:
ok 1 number(s): "139804054"
Test #8:
score: 0
Accepted
time: 3ms
memory: 3560kb
input:
1000000
output:
521718285
result:
ok 1 number(s): "521718285"
Test #9:
score: 0
Accepted
time: 12ms
memory: 3856kb
input:
10000000
output:
503104917
result:
ok 1 number(s): "503104917"
Test #10:
score: 0
Accepted
time: 70ms
memory: 4304kb
input:
100000000
output:
198815604
result:
ok 1 number(s): "198815604"
Test #11:
score: 0
Accepted
time: 367ms
memory: 6220kb
input:
1000000000
output:
373787809
result:
ok 1 number(s): "373787809"
Test #12:
score: 0
Accepted
time: 378ms
memory: 6244kb
input:
999999999
output:
997616263
result:
ok 1 number(s): "997616263"
Test #13:
score: 0
Accepted
time: 378ms
memory: 6248kb
input:
999999990
output:
997615701
result:
ok 1 number(s): "997615701"
Test #14:
score: 0
Accepted
time: 372ms
memory: 6232kb
input:
999999900
output:
993928691
result:
ok 1 number(s): "993928691"
Test #15:
score: 0
Accepted
time: 372ms
memory: 6224kb
input:
999999000
output:
754532207
result:
ok 1 number(s): "754532207"
Test #16:
score: 0
Accepted
time: 372ms
memory: 6220kb
input:
999990000
output:
996592686
result:
ok 1 number(s): "996592686"
Test #17:
score: 0
Accepted
time: 365ms
memory: 6284kb
input:
999900000
output:
311678722
result:
ok 1 number(s): "311678722"
Test #18:
score: 0
Accepted
time: 376ms
memory: 6280kb
input:
999000000
output:
60462624
result:
ok 1 number(s): "60462624"
Test #19:
score: 0
Accepted
time: 375ms
memory: 6316kb
input:
990000000
output:
444576800
result:
ok 1 number(s): "444576800"
Test #20:
score: 0
Accepted
time: 338ms
memory: 5988kb
input:
900000000
output:
95615129
result:
ok 1 number(s): "95615129"
Test #21:
score: 0
Accepted
time: 3ms
memory: 3576kb
input:
1361956
output:
813433539
result:
ok 1 number(s): "813433539"
Test #22:
score: 0
Accepted
time: 10ms
memory: 3868kb
input:
7579013
output:
677659797
result:
ok 1 number(s): "677659797"
Test #23:
score: 0
Accepted
time: 10ms
memory: 3856kb
input:
8145517
output:
801509527
result:
ok 1 number(s): "801509527"
Test #24:
score: 0
Accepted
time: 9ms
memory: 3768kb
input:
6140463
output:
869023935
result:
ok 1 number(s): "869023935"
Test #25:
score: 0
Accepted
time: 6ms
memory: 3648kb
input:
3515281
output:
989091505
result:
ok 1 number(s): "989091505"
Test #26:
score: 0
Accepted
time: 9ms
memory: 3840kb
input:
6969586
output:
539840131
result:
ok 1 number(s): "539840131"