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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#241446#5. 在线 O(1) 逆元mfeitveerCompile Error//C++14417b2023-11-06 07:45:362024-11-05 21:54:06

Judging History

你现在查看的是最新测评结果

  • [2024-11-05 21:54:06]
  • 管理员手动重测本题所有提交记录
  • [2023-11-06 07:45:37]
  • 评测
  • [2023-11-06 07:45:36]
  • 提交

answer

#include "inv.h"

const int N = 10000010;
const int mod = 998244353;

typedef long long ll;

ll Inv[N];

inline ll ask(ll x)
{
	 fir++;
    if(x <= 10000000) return Inv[x];
    return (mod - mod / x) * ask(mod % x) % mod;
}

inline void init(int p)
{
	Inv[1] = 1;
	for(int i = 2;i <= 10000000;i++)
		Inv[i] = (mod - mod / i) * Inv[mod % i] % mod;
}

inline int inv(int x)
{
	return ask(x);
}

Details

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);
      |         ~~~~~^~~~~~~~~~
answer.code: In function ‘ll ask(ll)’:
answer.code:12:10: error: ‘fir’ was not declared in this scope
   12 |          fir++;
      |          ^~~