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QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #4939 | #5. 在线 O(1) 逆元 | zombie462 | 60 | 3820ms | 121068kb | C++11 | 308b | 2020-10-19 09:43:13 | 2024-11-05 21:45:48 |
Judging History
你现在查看的是最新测评结果
- [2023-08-10 23:21:45]
- System Update: QOJ starts to keep a history of the judgings of all the submissions.
- [2020-10-19 09:43:13]
- 提交
answer
#include <bits/stdc++.h>
#include "inv.h"
using namespace std;
const int mod=998244353;
const int N=30000010;
int invv[N];
int inv(int a){
return a<N?invv[a]:1LL*(mod-mod/a)*inv(mod%a)%mod;
}
void init(int p){
invv[0]=invv[1]=1;
for (int i=2;i<N;++i) invv[i]=1LL*(mod-mod/i)*invv[mod%i]%mod;
}
Details
Pretests
Final Tests
Test #1:
score: 10
Accepted
time: 483ms
memory: 121068kb
Test #2:
score: 20
Accepted
time: 1279ms
memory: 120892kb
Test #3:
score: 30
Accepted
time: 3820ms
memory: 120952kb
Test #4:
score: 0
Time Limit Exceeded
Test #5:
score: 0
Time Limit Exceeded