提出 #49183824

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ソースコード 拡げる

#include<bits/stdc++.h>
#include<atcoder/convolution>
#include<atcoder/modint>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ldb;
typedef atcoder::modint998244353 mint;
typedef vector<mint> poly;

#define rep(i,l,r) for(int i(l);i<=(r);++i)
#define per(i,r,l) for(int i(r);i>=(l);--i)
#define eb emplace_back
#define File(filename) freopen(filename ".in","r",stdin),freopen(filename ".out","w",stdout)

#ifdef EXODUS
	#define Debug(...) fprintf(stderr,__VA_ARGS__)
#else
	#define Debug(...) 0
#endif

//=========================================================================================================
// Something about IO

template<typename T>
void read(T &x){
	x=0;T flg=1;
	char ch=getchar();
	while(!isdigit(ch)){if(ch=='-')flg=-1;ch=getchar();}
	while(isdigit(ch))x=(x<<3)+(x<<1)+(ch^48),ch=getchar();
	x*=flg;
}
template<typename T,typename... Args>
void read(T &x,Args &...args){read(x),read(args...);}

//=========================================================================================================
// Define the global variables here.

bool membg=0;

constexpr int N=2e5+7;
int n;
int d[N];
mint fac[N];

bool memed=0;

//=========================================================================================================
// Code here.

poly solve(int l,int r){
	if(l==r)return poly{1,d[l]};
	int mid=(l+r)>>1;
	return atcoder::convolution(solve(l,mid),solve(mid+1,r));
}

void solve(){
	read(n);
	for(int i=1;i<=n;i++)read(d[i]);
	fac[0]=1;for(int i=1;i<=n;i++)fac[i]=fac[i-1]*i;
	mint ans=fac[n-1];
	auto F=solve(1,n);
	mint base=1;
	for(int i=1;i<n;i++){
		ans+=fac[n-i]*F[i]*base;
		base*=n;
	}
	ans/=n;
	for(int i=1;i<=n;i++)ans/=fac[d[i]];
	printf("%d\n",ans.val());
	return;
}


//=========================================================================================================

int main(){
	Debug("%.3lfMB\n",fabs(&memed-&membg)/1024.0/1024.0);
	int timbg=clock();
	int T=1;
	while(T--)solve();
	int timed=clock();
	Debug("%.3lfs\n",1.0*(timed-timbg)/CLOCKS_PER_SEC);
	fflush(stdout);
	return 0;
}

提出情報

コンパイルエラー

Main.cpp: In function ‘int main()’:
Main.cpp:21:28: warning: statement has no effect [-Wunused-value]
   21 |         #define Debug(...) 0
      |                            ^
Main.cpp:80:9: note: in expansion of macro ‘Debug’
   80 |         Debug("%.3lfMB\n",fabs(&memed-&membg)/1024.0/1024.0);
      |         ^~~~~
Main.cpp:21:28: warning: statement has no effect [-Wunused-value]
   21 |         #define Debug(...) 0
      |                            ^
Main.cpp:85:9: note: in expansion of macro ‘Debug’
   85 |         Debug("%.3lfs\n",1.0*(timed-timbg)/CLOCKS_PER_SEC);
      |         ^~~~~
Main.cpp:81:13: warning: unused variable ‘timbg’ [-Wunused-variable]
   81 |         int timbg=clock();
      |             ^~~~~
Main.cpp:84:13: warning: unused variable ‘timed’ [-Wunused-variable]
   84 |         int timed=clock();
      |             ^~~~~

ジャッジ結果