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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#865465#9870. ItemsshungWA 16ms5968kbC++141.7kb2025-01-21 19:00:042025-01-21 19:00:05

Judging History

This is the latest submission verdict.

  • [2025-01-21 19:00:05]
  • Judged
  • Verdict: WA
  • Time: 16ms
  • Memory: 5968kb
  • [2025-01-21 19:00:04]
  • Submitted

answer

#include<bits/stdc++.h>
using namespace std;
const int N=600005,mod=998244353,g=3;
inline int add(int x,int y){
	return x+y>=mod?x+y-mod:x+y;
}
inline int del(int x,int y){
	return x-y<0?x-y+mod:x-y;
}
inline int mypow(int x,int y){
	int ans=1;
	while(y){
		if(y&1)ans=1ll*ans*x%mod;
		y>>=1;
		x=1ll*x*x%mod;
	}
	return ans;
}
int T,n,a[N],limit,r[N];
inline void ntt(vector<int>&A,int op){
	for(int i=0;i<limit;++i)if(r[i]>i)swap(A[i],A[r[i]]);
	for(int mid=1;mid<limit;mid<<=1){
		int L=mid+mid;
		int wn=mypow(g,(mod-1)/L);
		if(op==-1)wn=mypow(wn,mod-2);
		for(int i=0;i<limit;i+=L){
			int w=1;
			for(int j=0;j<mid;++j){
				int x=A[i+j],y=1ll*w*A[i+mid+j]%mod;
				A[i+j]=add(x,y),A[i+mid+j]=del(x,y);
				w=1ll*w*wn%mod;
			}
		}
	}
	if(op==-1){
		int inv=mypow(limit,mod-2);
		for(int i=0;i<limit;++i)A[i]=1ll*A[i]*inv%mod;
	}
}
inline vector<int> mul(vector<int>A,vector<int>B){
	int MAX=A.size()-1+B.size()-1;
	limit=1;
	int l=0;
	while(limit<=MAX)limit<<=1,++l;
	for(int i=0;i<limit;++i)r[i]=(r[i>>1]>>1)|((i&1)<<(l-1));
	while(A.size()<limit)A.push_back(0);
	while(B.size()<limit)B.push_back(0);
	ntt(A,1),ntt(B,1);
	for(int i=0;i<limit;++i)A[i]=1ll*A[i]*B[i]%mod;
	ntt(A,-1);
	vector<int>C;
	for(int i=n;i<=n+n+n;++i)C.push_back(A[i]);
	return C;
}
int main(){
	scanf("%d",&T);
	long long m;
	while(T--){
		scanf("%d%lld",&n,&m);
		vector<int>A;
		for(int i=0;i<=n+n;++i)A.push_back(0);
		int x;
		for(int i=1;i<=n;++i){
			scanf("%d",&x);
			A[x-m/n+n]=1;
		}
		vector<int>B;
		for(int i=0;i<=n+n;++i)B.push_back(0);
		B[n]=1;
		int nn=n;
		while(nn){
			if(nn&1)A=mul(A,B);
			nn>>=1;
			B=mul(B,B);
		}
		if(A[m%n+n])puts("Yes");
		else puts("No");
	}
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 5964kb

input:

4
5 25
0 0 0 0 5
5 11
4 4 4 5 5
5 0
1 2 3 4 5
5 25
0 1 2 3 4

output:

Yes
No
No
No

result:

ok 4 token(s): yes count is 1, no count is 3

Test #2:

score: -100
Wrong Answer
time: 16ms
memory: 5968kb

input:

1314
1 0
0
1 0
1
1 1
0
1 1
1
2 0
0 0
2 0
0 1
2 0
0 2
2 0
1 0
2 0
1 1
2 0
1 2
2 0
2 0
2 0
2 1
2 0
2 2
2 1
0 0
2 1
0 1
2 1
0 2
2 1
1 0
2 1
1 1
2 1
1 2
2 1
2 0
2 1
2 1
2 1
2 2
2 2
0 0
2 2
0 1
2 2
0 2
2 2
1 0
2 2
1 1
2 2
1 2
2 2
2 0
2 2
2 1
2 2
2 2
2 3
0 0
2 3
0 1
2 3
0 2
2 3
1 0
2 3
1 1
2 3
1 2
2 3
2 0...

output:

Yes
No
No
Yes
Yes
Yes
Yes
Yes
No
No
Yes
No
No
No
Yes
No
Yes
Yes
Yes
No
Yes
No
No
Yes
No
Yes
Yes
Yes
No
Yes
No
No
No
Yes
No
No
Yes
Yes
Yes
Yes
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
Yes
No
No
No
Yes
No
No
No
Yes
Yes...

result:

wrong answer expected NO, found YES [18th token]