QOJ.ac
QOJ
| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #401690 | #1085. Brave Seekers of Unicorns | ship2077 | AC ✓ | 18ms | 7796kb | C++14 | 440b | 2024-04-29 09:36:48 | 2024-04-29 09:36:48 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
constexpr int mod=998244353;
int n,sum[1000005];
int main(){
scanf("%d",&n);
for (int i=1;i<=n;i++){
unsigned long long tmp=sum[i-1]+1;
int highbit=31^__builtin_clz(i),l=1<<highbit,r=i;
while (l<r){
int low=r&-r;
int xl=(r^low^i)&~(low-1),xr=xl+low-1;
tmp+=sum[xl-1]+mod-sum[xr]; r^=low;
}
sum[i]=(sum[i-1]+tmp)%mod;
}
printf("%d\n",sum[n]);
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3956kb
input:
1
output:
1
result:
ok 1 number(s): "1"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3956kb
input:
2
output:
3
result:
ok 1 number(s): "3"
Test #3:
score: 0
Accepted
time: 1ms
memory: 3804kb
input:
3
output:
6
result:
ok 1 number(s): "6"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3832kb
input:
5
output:
26
result:
ok 1 number(s): "26"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3796kb
input:
322
output:
782852421
result:
ok 1 number(s): "782852421"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3884kb
input:
10
output:
728
result:
ok 1 number(s): "728"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
100
output:
234222727
result:
ok 1 number(s): "234222727"
Test #8:
score: 0
Accepted
time: 0ms
memory: 3904kb
input:
10000
output:
348787098
result:
ok 1 number(s): "348787098"
Test #9:
score: 0
Accepted
time: 18ms
memory: 7776kb
input:
1000000
output:
246427510
result:
ok 1 number(s): "246427510"
Test #10:
score: 0
Accepted
time: 18ms
memory: 7796kb
input:
999999
output:
525546416
result:
ok 1 number(s): "525546416"
Test #11:
score: 0
Accepted
time: 17ms
memory: 7676kb
input:
950000
output:
154241852
result:
ok 1 number(s): "154241852"
Test #12:
score: 0
Accepted
time: 18ms
memory: 7724kb
input:
999888
output:
254589934
result:
ok 1 number(s): "254589934"
Test #13:
score: 0
Accepted
time: 18ms
memory: 7696kb
input:
999423
output:
917909701
result:
ok 1 number(s): "917909701"
Test #14:
score: 0
Accepted
time: 11ms
memory: 7140kb
input:
600000
output:
546076071
result:
ok 1 number(s): "546076071"
Test #15:
score: 0
Accepted
time: 0ms
memory: 3796kb
input:
1337
output:
616951443
result:
ok 1 number(s): "616951443"