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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
#640853#5. 在线 O(1) 逆元masterhuangCompile Error//C++20314b2024-10-14 16:30:442024-11-05 22:05:41

Judging History

你现在查看的是最新测评结果

  • [2024-11-05 22:05:41]
  • 管理员手动重测本题所有提交记录
  • [2024-10-14 16:30:45]
  • 评测
  • [2024-10-14 16:30:44]
  • 提交

answer

#include"inv.h"
const int N=1e7+5,mod=998244353;
int n=N-5,I[N];
inline void init(int p)
{
	I[1]=1;
	for(int i=2;i<=n;i++) I[i]=(mod-1ll*(mod/i)*I[mod%i])%mod;
}
inline int inv(int x)
{
	if(x<=n) return I[x];
	int q=mod/x,r=mod%x;
	if(r<x/2) return mod-1ll*q*inv(r)%mod;
	return 1ll*q*inv(x-r)%mod;
}

詳細信息

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/ccKzzlBZ.o: in function `main':
implementer.cpp:(.text.startup+0x12b): undefined reference to `init(int)'
/usr/bin/ld: implementer.cpp:(.text.startup+0x1d0): undefined reference to `inv(int)'
collect2: error: ld returned 1 exit status