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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#177119#6740. Functionucup-team870#AC ✓378ms6316kbC++171.2kb2023-09-12 16:06:402023-09-12 16:06:41

Judging History

你现在查看的是最新测评结果

  • [2023-09-12 16:06:41]
  • 评测
  • 测评结果:AC
  • 用时:378ms
  • 内存:6316kb
  • [2023-09-12 16:06:40]
  • 提交

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"