QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #483218 | #6740. Function | ucup-team052# | AC ✓ | 216ms | 4468kb | C++14 | 732b | 2024-07-18 13:55:02 | 2024-07-18 13:55:02 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define mod 998244353
inline int add(int x,int y) {return x+y>=mod?x+y-mod:x+y;}
inline int sub(int x,int y) {return x-y<0?x-y+mod:x-y;}
inline int mul(int x,int y) {return 1ULL*x*y%mod;}
int n,sqrt_n;
#define N 200005
const int L=20210926;
int pos[N],m,f[N];
int ID(int x){
return x<=sqrt_n?x:m-n/x+1;
}
int main() {
#ifdef xay5421
freopen("a.in","r",stdin);
#endif
cin>>n;
sqrt_n=sqrt(n);
for(int l=1,r;l<=n;l=r+1){
r=n/(n/l);
pos[++m]=r;
}
f[1]=1;
for(int i=2;i<=m;++i){
f[i]=1;
int x=pos[i];
for(int l=2,r;l<=x&&l<=L;l=r+1){
r=min(x/(x/l),L);
f[i]=add(f[i],mul(r-l+1,f[ID(x/l)]));
}
}
printf("%d\n",f[m]);
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3812kb
input:
1
output:
1
result:
ok 1 number(s): "1"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3800kb
input:
2
output:
2
result:
ok 1 number(s): "2"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3916kb
input:
100
output:
949
result:
ok 1 number(s): "949"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3880kb
input:
10
output:
19
result:
ok 1 number(s): "19"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3920kb
input:
1000
output:
48614
result:
ok 1 number(s): "48614"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3936kb
input:
10000
output:
2602393
result:
ok 1 number(s): "2602393"
Test #7:
score: 0
Accepted
time: 1ms
memory: 3984kb
input:
100000
output:
139804054
result:
ok 1 number(s): "139804054"
Test #8:
score: 0
Accepted
time: 2ms
memory: 3876kb
input:
1000000
output:
521718285
result:
ok 1 number(s): "521718285"
Test #9:
score: 0
Accepted
time: 7ms
memory: 3868kb
input:
10000000
output:
503104917
result:
ok 1 number(s): "503104917"
Test #10:
score: 0
Accepted
time: 39ms
memory: 3944kb
input:
100000000
output:
198815604
result:
ok 1 number(s): "198815604"
Test #11:
score: 0
Accepted
time: 212ms
memory: 4340kb
input:
1000000000
output:
373787809
result:
ok 1 number(s): "373787809"
Test #12:
score: 0
Accepted
time: 216ms
memory: 4312kb
input:
999999999
output:
997616263
result:
ok 1 number(s): "997616263"
Test #13:
score: 0
Accepted
time: 215ms
memory: 4352kb
input:
999999990
output:
997615701
result:
ok 1 number(s): "997615701"
Test #14:
score: 0
Accepted
time: 216ms
memory: 4432kb
input:
999999900
output:
993928691
result:
ok 1 number(s): "993928691"
Test #15:
score: 0
Accepted
time: 215ms
memory: 4408kb
input:
999999000
output:
754532207
result:
ok 1 number(s): "754532207"
Test #16:
score: 0
Accepted
time: 216ms
memory: 4468kb
input:
999990000
output:
996592686
result:
ok 1 number(s): "996592686"
Test #17:
score: 0
Accepted
time: 215ms
memory: 4280kb
input:
999900000
output:
311678722
result:
ok 1 number(s): "311678722"
Test #18:
score: 0
Accepted
time: 215ms
memory: 4352kb
input:
999000000
output:
60462624
result:
ok 1 number(s): "60462624"
Test #19:
score: 0
Accepted
time: 214ms
memory: 4276kb
input:
990000000
output:
444576800
result:
ok 1 number(s): "444576800"
Test #20:
score: 0
Accepted
time: 199ms
memory: 4184kb
input:
900000000
output:
95615129
result:
ok 1 number(s): "95615129"
Test #21:
score: 0
Accepted
time: 2ms
memory: 3872kb
input:
1361956
output:
813433539
result:
ok 1 number(s): "813433539"
Test #22:
score: 0
Accepted
time: 6ms
memory: 3888kb
input:
7579013
output:
677659797
result:
ok 1 number(s): "677659797"
Test #23:
score: 0
Accepted
time: 6ms
memory: 3764kb
input:
8145517
output:
801509527
result:
ok 1 number(s): "801509527"
Test #24:
score: 0
Accepted
time: 5ms
memory: 3824kb
input:
6140463
output:
869023935
result:
ok 1 number(s): "869023935"
Test #25:
score: 0
Accepted
time: 3ms
memory: 3704kb
input:
3515281
output:
989091505
result:
ok 1 number(s): "989091505"
Test #26:
score: 0
Accepted
time: 6ms
memory: 3828kb
input:
6969586
output:
539840131
result:
ok 1 number(s): "539840131"