QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #277228 | #7046. Function! | zzuqy# | AC ✓ | 12ms | 3688kb | C++11 | 580b | 2023-12-06 16:48:29 | 2023-12-06 16:48:30 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll mod=998244353;
ll quick(ll x,ll y)
{
ll t=1;
while(y)
{
if(y&1)
t=t*x%mod;
x=x*x%mod;
y=y/2;
}
return t;
}
ll n,ans;
ll ask(ll x)
{
x=(1+x)*x%mod*quick(2,mod-2)%mod*(n+1)%mod-(x+1)*x%mod*(x*2+1)%mod*quick(6,mod-2)%mod;
x=(x%mod+mod)%mod;
return x;
}
int main()
{
cin>>n;
ll i;
for(i=2;i*i<=n;i++)
{
ll j=i;
while(j<=n)
{
ans=(ans+i*(n-j+1))%mod;
j=j*i;
}
}
n=n%mod;
ans=ans+ask(n)-ask(i-1);
ans=(ans%mod+mod)%mod;
cout<<ans;
}
这程序好像有点Bug，我给组数据试试？
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3536kb
input:
2
output:
2
result:
ok 1 number(s): "2"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3464kb
input:
10
output:
236
result:
ok 1 number(s): "236"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3620kb
input:
20
output:
1646
result:
ok 1 number(s): "1646"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3652kb
input:
27
output:
3862
result:
ok 1 number(s): "3862"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3608kb
input:
37
output:
9571
result:
ok 1 number(s): "9571"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3528kb
input:
100
output:
175028
result:
ok 1 number(s): "175028"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3688kb
input:
123
output:
322744
result:
ok 1 number(s): "322744"
Test #8:
score: 0
Accepted
time: 0ms
memory: 3604kb
input:
2548
output:
765669726
result:
ok 1 number(s): "765669726"
Test #9:
score: 0
Accepted
time: 0ms
memory: 3624kb
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: 3496kb
input:
102458
output:
475774506
result:
ok 1 number(s): "475774506"
Test #12:
score: 0
Accepted
time: 0ms
memory: 3588kb
input:
222333
output:
64337543
result:
ok 1 number(s): "64337543"
Test #13:
score: 0
Accepted
time: 0ms
memory: 3528kb
input:
485174
output:
312492357
result:
ok 1 number(s): "312492357"
Test #14:
score: 0
Accepted
time: 0ms
memory: 3684kb
input:
685479
output:
35530508
result:
ok 1 number(s): "35530508"
Test #15:
score: 0
Accepted
time: 0ms
memory: 3620kb
input:
1025481
output:
921523794
result:
ok 1 number(s): "921523794"
Test #16:
score: 0
Accepted
time: 0ms
memory: 3492kb
input:
9999999
output:
732610409
result:
ok 1 number(s): "732610409"
Test #17:
score: 0
Accepted
time: 0ms
memory: 3684kb
input:
7458658
output:
825346623
result:
ok 1 number(s): "825346623"
Test #18:
score: 0
Accepted
time: 0ms
memory: 3652kb
input:
5268475
output:
30938162
result:
ok 1 number(s): "30938162"
Test #19:
score: 0
Accepted
time: 0ms
memory: 3596kb
input:
2658478
output:
780038100
result:
ok 1 number(s): "780038100"
Test #20:
score: 0
Accepted
time: 0ms
memory: 3616kb
input:
10000000
output:
679483439
result:
ok 1 number(s): "679483439"
Test #21:
score: 0
Accepted
time: 0ms
memory: 3492kb
input:
100000000
output:
498142384
result:
ok 1 number(s): "498142384"
Test #22:
score: 0
Accepted
time: 1ms
memory: 3528kb
input:
1000000000
output:
69187994
result:
ok 1 number(s): "69187994"
Test #23:
score: 0
Accepted
time: 1ms
memory: 3536kb
input:
10000000000
output:
23566211
result:
ok 1 number(s): "23566211"
Test #24:
score: 0
Accepted
time: 4ms
memory: 3492kb
input:
100000000000
output:
247411531
result:
ok 1 number(s): "247411531"
Test #25:
score: 0
Accepted
time: 12ms
memory: 3684kb
input:
1000000000000
output:
434484365
result:
ok 1 number(s): "434484365"
Test #26:
score: 0
Accepted
time: 8ms
memory: 3548kb
input:
487456215487
output:
219915839
result:
ok 1 number(s): "219915839"
Test #27:
score: 0
Accepted
time: 4ms
memory: 3604kb
input:
123456654321
output:
873090152
result:
ok 1 number(s): "873090152"
Test #28:
score: 0
Accepted
time: 6ms
memory: 3680kb
input:
485623875512
output:
905855726
result:
ok 1 number(s): "905855726"
Test #29:
score: 0
Accepted
time: 9ms
memory: 3660kb
input:
598745632254
output:
548362077
result:
ok 1 number(s): "548362077"
Test #30:
score: 0
Accepted
time: 5ms
memory: 3524kb
input:
451518115487
output:
856104478
result:
ok 1 number(s): "856104478"