Submission #1694451

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Source Code Expand

#include <algorithm>
#include <cstdio>

const int N=200005,M=1<<19,mo=924844033;
int a[M],b[M],rev[M],g[20][2],fst[N],fac[N],inv[N],n,tot=0,invn;
struct Edge{
	int to,nxt;
}e[N*2];

void addedge(int x,int y){
	e[++tot].to=y;e[tot].nxt=fst[x];fst[x]=tot;
}

int dfs(int x,int father){
	int sz=1;
	for (int i=fst[x];i;i=e[i].nxt)
		if (e[i].to!=father) sz+=dfs(e[i].to,x);
	if (x!=1) a[sz]++,a[n-sz]++;
	return sz;
}

void FFT(int *a,int n,int f){
	for (int i=0;i<n;i++)
		if (i<rev[i]) std::swap(a[i],a[rev[i]]);
	for (int i=1,t=0;i<n;i<<=1,t++){
		int wn=g[t][f];
		for (int j=0;j<n;j+=i<<1){
			int w=1;
			for (int k=0;k<i;k++,w=1ll*w*wn%mo){
				int x=a[j+k],y=1ll*w*a[j+k+i]%mo;
				a[j+k]=(x+y)%mo;
				a[j+k+i]=(x-y)%mo;
			}
		}
	}
	if (f)
		for (int i=0;i<n;i++) a[i]=1ll*a[i]*invn%mo;
}

int ksm(int x,int y){
	int i=1;
	for (;y;y>>=1,x=1ll*x*x%mo)
		if (y&1) i=1ll*i*x%mo;
	return i;
}

void mul(int m){
	int L=0,n=1;
	for (;n<m;n<<=1) L++;
	invn=ksm(n,mo-2);
	for (int i=1;i<n;i++)
		rev[i]=rev[i>>1]>>1^((i&1)<<(L-1));
	int val0=ksm(5,(mo-1)/n),val1=ksm(val0,mo-2);
	for (int i=L-1;i>=0;i--){
		g[i][0]=val0;val0=1ll*val0*val0%mo;
		g[i][1]=val1;val1=1ll*val1*val1%mo;
	}
	FFT(a,n,0);FFT(b,n,0);
	for (int i=0;i<n;i++) a[i]=1ll*a[i]*b[i]%mo;
	FFT(a,n,1);
}

int main(){
	scanf("%d\n",&n);
	for (int i=1;i<n;i++){
		int x,y;
		scanf("%d%d\n",&x,&y);
		addedge(x,y);
		addedge(y,x);
	}
	dfs(1,0);
	fac[0]=1;
	for (int i=1;i<=n;i++) fac[i]=1ll*fac[i-1]*i%mo;
	inv[n]=ksm(fac[n],mo-2);
	for (int i=n;i;i--) inv[i-1]=1ll*inv[i]*i%mo;
	for (int i=0;i<=n;i++){
		a[i]=1ll*a[i]*fac[n-i]%mo;
		b[i]=inv[i];
	}
	mul(n*2);
	for (int i=1;i<=n;i++){
		int ans=(1ll*fac[n]*inv[n-i]%mo*n-a[n-i])%mo*inv[i]%mo;
		printf("%d\n",(ans+mo)%mo);
	}
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:64:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d\n",&n);
                  ^
./Main.cpp:67:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d\n",&x,&y);
                        ^

Judge Result