Submission #1836830


Source Code Expand

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

typedef long long ll;
const int maxn=1<<18,mod=924844033;
int n,size[maxn];
ll fac[maxn],finv[maxn],a[maxn<<1],b[maxn<<1],c[maxn<<1];
vector<int> g[maxn];

inline ll qpow(ll a,ll n){
	ll res=1;
	while(n){
		if(n&1)
			res=res*a%mod;
		a=a*a%mod;
		n>>=1;
	}
	return res;
}
void dfs(int pos,int fa){
	size[pos]=1;
	for(int i=0,v;i<g[pos].size();++i)
		if((v=g[pos][i])!=fa){
			dfs(v,pos);
			size[pos]+=size[v];
			++a[size[v]];
			++a[n-size[v]];
		}
}
inline int rev(int id,int len){
	int res=0;
	for(int i=1;i<len;i<<=1){
		res<<=1;
		if(id&i)
			res|=1;
	}
	return res;
}
inline void fft(ll*a,int len,int dft){
	for(int i=0;i<len;++i)
		if(i<rev(i,len))
			swap(a[i],a[rev(i,len)]);
	for(int i=2;i<=len;i<<=1){
		ll w=qpow(5,(mod-1)/i);
		if(dft==-1)
			w=qpow(w,mod-2);
		for(int j=0;j<len;j+=i){
			ll ww=1;
			for(int k=0;k<(i>>1);++k,ww=ww*w%mod){
				ll x=a[j+k],y=a[j+k+(i>>1)]*ww%mod;
				a[j+k]=(x+y)%mod;
				a[j+k+(i>>1)]=(x-y+mod)%mod;
			}
		}
	}
	if(dft==-1){
		int inv=qpow(len,mod-2);
		for(int i=0;i<len;++i)
			a[i]=a[i]*inv%mod;
	}
}

int main(){
	fac[0]=1;
	for(int i=1;i<maxn;++i)
		fac[i]=fac[i-1]*i%mod;
	finv[maxn-1]=qpow(fac[maxn-1],mod-2);
	for(int i=maxn-1;i;--i)
		finv[i-1]=finv[i]*i%mod;
	scanf("%d",&n);
	for(int i=1,u,v;i<n;++i){
		scanf("%d%d",&u,&v);
		g[u].push_back(v);
		g[v].push_back(u);
	}
	dfs(1,0);
	for(int i=1;i<n;++i)
		a[i]=a[i]*fac[i]%mod;
	for(int i=0;i<=n;++i)
		b[i]=finv[n-i];
	fft(a,maxn<<1,1);
	fft(b,maxn<<1,1);
	for(int i=0;i<(maxn<<1);++i)
		c[i]=a[i]*b[i]%mod;
	fft(c,maxn<<1,-1);
	for(int i=1;i<=n;++i)
		printf("%lld\n",(n*fac[n]%mod*finv[i]%mod*finv[n-i]%mod-finv[i]*c[n+i]%mod+mod)%mod);
	return 0;
}

Submission Info

Submission Time
Task F - Many Easy Problems
User guo
Language C++14 (GCC 5.4.1)
Score 1900
Code Size 1798 Byte
Status AC
Exec Time 282 ms
Memory 44928 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:70:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
./Main.cpp:72:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&u,&v);
                      ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 1900 / 1900
Status
AC × 3
AC × 48
Set Name Test Cases
Sample example0, example1, example2
All doublestar0, doublestar1, doublestar2, doublestar3, doublestar4, example0, example1, example2, line0, line1, line2, line3, line4, maxrand0, maxrand1, maxrand10, maxrand11, maxrand12, maxrand13, maxrand14, maxrand15, maxrand16, maxrand17, maxrand18, maxrand19, maxrand2, maxrand3, maxrand4, maxrand5, maxrand6, maxrand7, maxrand8, maxrand9, rand0, rand1, rand2, rand3, rand4, rand5, rand6, rand7, rand8, rand9, star0, star1, star2, star3, star4
Case Name Status Exec Time Memory
doublestar0 AC 247 ms 32120 KB
doublestar1 AC 246 ms 32120 KB
doublestar2 AC 247 ms 32120 KB
doublestar3 AC 249 ms 32120 KB
doublestar4 AC 248 ms 32120 KB
example0 AC 174 ms 22784 KB
example1 AC 174 ms 22784 KB
example2 AC 175 ms 22784 KB
line0 AC 268 ms 44928 KB
line1 AC 263 ms 44928 KB
line2 AC 264 ms 44928 KB
line3 AC 263 ms 44928 KB
line4 AC 264 ms 44928 KB
maxrand0 AC 274 ms 32000 KB
maxrand1 AC 275 ms 32000 KB
maxrand10 AC 274 ms 32000 KB
maxrand11 AC 275 ms 32000 KB
maxrand12 AC 274 ms 32000 KB
maxrand13 AC 276 ms 32000 KB
maxrand14 AC 274 ms 32000 KB
maxrand15 AC 275 ms 32000 KB
maxrand16 AC 274 ms 32000 KB
maxrand17 AC 275 ms 32000 KB
maxrand18 AC 282 ms 32000 KB
maxrand19 AC 277 ms 32000 KB
maxrand2 AC 275 ms 32000 KB
maxrand3 AC 278 ms 32000 KB
maxrand4 AC 277 ms 32000 KB
maxrand5 AC 281 ms 32000 KB
maxrand6 AC 276 ms 32000 KB
maxrand7 AC 279 ms 32000 KB
maxrand8 AC 279 ms 32000 KB
maxrand9 AC 274 ms 32000 KB
rand0 AC 176 ms 22912 KB
rand1 AC 175 ms 22784 KB
rand2 AC 175 ms 22912 KB
rand3 AC 175 ms 22912 KB
rand4 AC 174 ms 22784 KB
rand5 AC 175 ms 22912 KB
rand6 AC 176 ms 22912 KB
rand7 AC 175 ms 22912 KB
rand8 AC 174 ms 22784 KB
rand9 AC 175 ms 22784 KB
star0 AC 241 ms 32500 KB
star1 AC 242 ms 32500 KB
star2 AC 243 ms 32500 KB
star3 AC 241 ms 32500 KB
star4 AC 241 ms 32500 KB