提出 #51388026

---

ソースコード 拡げる

#include <bits/stdc++.h>
#define int long long
using namespace std;
const int mod=998244353;
int poW(int x,int y=mod-2){
	int res=1;
	while(y){
		if(y&1) res=res*x%mod;
		x=x*x%mod;y>>=1;
	}
	return res;
}
int n,dp1[1000005],dp2[1000005];
signed main(){
	scanf("%lld",&n);
	for(int i=1;i<=n;++i){
		int p=i*poW(n)%mod;
		int p0=poW(2ll+mod-p);
		int p1=1ll+mod-p0;
		dp1[i]=(p0*dp2[i-1]%mod+p1*dp1[i-1]%mod+(1ll+mod-p)*poW((1ll-(1ll-p)*(1ll-p)%mod+mod)%mod)%mod)%mod;
		dp2[i]=(p0*dp1[i-1]%mod+p1*dp2[i-1]%mod+(1ll+mod-p)*(1ll+mod-p)%mod*poW((1ll-(1ll-p)*(1ll-p)%mod+mod)%mod)%mod)%mod;
	}
	printf("%lld %lld\n",dp1[n],dp2[n]);
	return 0;
}

提出情報

コンパイルエラー

Main.cpp: In function ‘int main()’:
Main.cpp:15:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   15 |         scanf("%lld",&n);
      |         ~~~~~^~~~~~~~~~~

ジャッジ結果