QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #692609 | #7046. Function! | welikestudying | WA | 3ms | 3744kb | C++23 | 504b | 2024-10-31 14:47:04 | 2024-10-31 14:47:06 |
Judging History
answer
#include<bits/stdc++.h>
const int p=998244353;
#define up(a,b,c)for(int a=b;a<=c;++a)
using ll=long long;
using namespace std;
ll n,as,B;
ll S1(ll n)
{
n%=p;return (n+1)*n/2%p;
}
ll S2(ll n)
{
n%=p;return (p+1)/6*n%p*(n+1)%p*(2*n+1)%p;
}
int main()
{
cin>>n,B=sqrt(n);
up(i,2,B)as=(as+(i-1ll)*i%p*i)%p;
as=(as+2*p+(S1(n)-S1(B))*(n+1)%p-S2(n)+S2(B))%p;
up(i,2,B)
{
ll j=i,t=1;
while(j<=n/i)
j*=i,as=(as+(j<=n/i?j*(i-1):n-j+1)%p*i*++t)%p;
}
cout<<as;
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 3544kb
input:
2
output:
2
result:
ok 1 number(s): "2"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3624kb
input:
10
output:
236
result:
ok 1 number(s): "236"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3624kb
input:
20
output:
1646
result:
ok 1 number(s): "1646"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3744kb
input:
27
output:
3862
result:
ok 1 number(s): "3862"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3680kb
input:
37
output:
9571
result:
ok 1 number(s): "9571"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3624kb
input:
100
output:
175028
result:
ok 1 number(s): "175028"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3552kb
input:
123
output:
322744
result:
ok 1 number(s): "322744"
Test #8:
score: 0
Accepted
time: 0ms
memory: 3620kb
input:
2548
output:
765669726
result:
ok 1 number(s): "765669726"
Test #9:
score: 0
Accepted
time: 0ms
memory: 3548kb
input:
12448
output:
159637196
result:
ok 1 number(s): "159637196"
Test #10:
score: 0
Accepted
time: 0ms
memory: 3492kb
input:
65535
output:
120089112
result:
ok 1 number(s): "120089112"
Test #11:
score: 0
Accepted
time: 0ms
memory: 3548kb
input:
102458
output:
475774506
result:
ok 1 number(s): "475774506"
Test #12:
score: 0
Accepted
time: 0ms
memory: 3500kb
input:
222333
output:
64337543
result:
ok 1 number(s): "64337543"
Test #13:
score: 0
Accepted
time: 0ms
memory: 3552kb
input:
485174
output:
312492357
result:
ok 1 number(s): "312492357"
Test #14:
score: 0
Accepted
time: 0ms
memory: 3696kb
input:
685479
output:
35530508
result:
ok 1 number(s): "35530508"
Test #15:
score: 0
Accepted
time: 0ms
memory: 3552kb
input:
1025481
output:
921523794
result:
ok 1 number(s): "921523794"
Test #16:
score: 0
Accepted
time: 0ms
memory: 3620kb
input:
9999999
output:
732610409
result:
ok 1 number(s): "732610409"
Test #17:
score: 0
Accepted
time: 0ms
memory: 3632kb
input:
7458658
output:
825346623
result:
ok 1 number(s): "825346623"
Test #18:
score: 0
Accepted
time: 0ms
memory: 3680kb
input:
5268475
output:
30938162
result:
ok 1 number(s): "30938162"
Test #19:
score: 0
Accepted
time: 0ms
memory: 3628kb
input:
2658478
output:
780038100
result:
ok 1 number(s): "780038100"
Test #20:
score: 0
Accepted
time: 0ms
memory: 3544kb
input:
10000000
output:
679483439
result:
ok 1 number(s): "679483439"
Test #21:
score: 0
Accepted
time: 0ms
memory: 3620kb
input:
100000000
output:
498142384
result:
ok 1 number(s): "498142384"
Test #22:
score: 0
Accepted
time: 1ms
memory: 3644kb
input:
1000000000
output:
69187994
result:
ok 1 number(s): "69187994"
Test #23:
score: 0
Accepted
time: 1ms
memory: 3628kb
input:
10000000000
output:
23566211
result:
ok 1 number(s): "23566211"
Test #24:
score: -100
Wrong Answer
time: 3ms
memory: 3492kb
input:
100000000000
output:
512181303
result:
wrong answer 1st numbers differ - expected: '247411531', found: '512181303'