QOJ.ac

QOJ

ID提交记录ID题目HackerOwner结果提交时间测评时间
#518#310338#8000. 平方数QingyumasterhuangSuccess!2024-01-22 00:28:362024-01-22 00:28:36

詳細信息

Extra Test:

Wrong Answer
time: 387ms
memory: 52412kb

input:

300000
11451419198100000000000000000000000 11451419198100000000000000000000001 11451419198100000000000000000000002 11451419198100000000000000000000003 11451419198100000000000000000000004 11451419198100000000000000000000005 11451419198100000000000000000000006 11451419198100000000000000000000007 11451...

output:

314326
71337 228657
71337 228658
71337 228659
71337 228660
71337 228661
71337 228662
71337 228663
71340 71340
71340 71341
71341 71341
71343 71343
71343 71344
71343 71345
71343 71346
71343 71347
71343 71348
71344 71344
71344 71345
71344 71346
71344 71347
71344 71348
71345 71345
71345 71346
71345 7134...

result:

wrong answer 1st numbers differ - expected: '314319', found: '314326'

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
#310338#8000. 平方数masterhuang97 530ms90968kbC++201.5kb2024-01-21 11:24:502024-01-22 00:29:00

answer

//洛谷 P10063
//https://www.luogu.com.cn/problem/P10063
#include<bits/stdc++.h>
#include<bits/extc++.h>
#define LL long long
#define ull unsigned long long
#define bll __int128
#define fr(x) freopen(#x".in","r",stdin);freopen(#x".out","w",stdout);
using namespace std;
using namespace __gnu_pbds;
mt19937 rnd(time(0));
const int N=3e5+5,B=50;
inline bll rd()
{
	bll x=0;char ch=getchar();
	while(ch<'0'||ch>'9') ch=getchar();
	while(ch>='0'&&ch<='9') x=x*10+ch-'0',ch=getchar();
	return x;
}
int n,b[N],pr[N],tot,e[N];ull d[N],ans;bool v[N*4];bll a[N];
gp_hash_table<ull,vector<int>>mp;
inline void init(int M=1e6)
{
	for(int i=2;i<=M;i++)
	{
		if(!v[i]) pr[++pr[0]]=i;
		for(int j=1;j<=pr[0]&&i*pr[j]<=M;j++)
		{
			v[i*pr[j]]=1;
			if(i%pr[j]==0) break;
		}
	}int cnt=0;
	for(int i=1;i<=pr[0];i++) if(5e5<=pr[i]&&pr[i]<=1e6) b[++cnt]=pr[i];
	shuffle(b+1,b+1+cnt,rnd);
}
inline void get(int t)
{
	const unsigned mod=b[t];fill(v+0,v+1+mod,1);
	for(int i=0;i<mod;i++) v[1ll*i*i%mod]=0;
	for(int i=1;i<=n;i++)
	{
		bll x=a[i];while(x%mod==0) x/=mod;
		if(v[x%mod]) d[i]|=(1ll<<t);
	}
}
int main()
{
	init();scanf("%d",&n);for(int i=1;i<=n;i++) a[i]=rd();
	for(int i=1;i<=B;i++) get(i);
	for(int i=1;i<=n;i++) d[i]^=d[i-1];
	for(int i=0;i<=n;i++) mp[d[i]].push_back(i),e[i]=mp[d[i]].size();
	for(int i=0;i<n;i++) ans+=mp[d[i]].size()-e[i];printf("%llu\n",ans);
	for(int i=0;i<n;i++)
	{
		vector<int>g=mp[d[i]];
		for(int j=e[i];j<g.size();j++){printf("%d %d\n",i+1,g[j]);if(++tot==1e5) return 0;}
	}
	return 0;
}