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 |
|---|---|---|---|---|---|---|---|---|---|
| #136492 | #5. 在线 O(1) 逆元 | zhouhuanyi | Compile Error | / | / | C++14 | 497b | 2023-08-08 21:04:05 | 2024-11-05 21:51:30 |
Judging History
你现在查看的是最新测评结果
- [2024-11-05 21:51:30]
- 管理员手动重测本题所有提交记录
- 测评结果：Compile Error
- 用时：0ms
- 内存：0kb
- [2023-08-10 23:21:45]
- System Update: QOJ starts to keep a history of the judgings of all the submissions.
- [2023-08-08 21:04:06]
- 评测
- 测评结果：Compile Error
- 用时：0ms
- 内存：0kb
- [2023-08-08 21:04:05]
- 提交
answer
#include<iostream>
#include<cstdio>
#define mod 998244353
#define N 10000000
using namespace std;
int MD2(int x)
{
return x<0?x+mod:x;
}
int T,invs[N+1];
void init(int p)
{
invs[1]=1;
for (int i=2;i<=N;++i) invs[i]=MD2(-1ll*(mod/i)*invs[mod%i]%mod);
return;
}
int inv(int x)
{
int a,b;
if (x<=N) return invs[x];
else return MD2(-1ll*(mod/x)*inv(mod%x)%mod);
}
int main()
{
int x;
cin>>T,init(0);
while (T--) cin>>x,cout<<1ll*inv(x)*x%mod<<endl;
return 0;
}
详细
implementer.cpp: In function ‘int main()’:
implementer.cpp:22:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
22 | scanf("%d", &n);
| ~~~~~^~~~~~~~~~
/usr/bin/ld: /tmp/ccE6ydHI.o: in function `main':
answer.code:(.text.startup+0x0): multiple definition of `main'; /tmp/ccjq8hwI.o:implementer.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status