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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#308278#3837. The Matching System CrysflyAC ✓1ms3756kbC++172.9kb2024-01-19 20:19:242024-01-19 20:19:24

Judging History

你现在查看的是最新测评结果

  • [2024-01-19 20:19:24]
  • 评测
  • 测评结果:AC
  • 用时:1ms
  • 内存:3756kb
  • [2024-01-19 20:19:24]
  • 提交

answer

// what is matter? never mind. 
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#pragma GCC target("sse,sse2,sse3,sse4,popcnt,abm,mmx,avx,avx2") 
#include<bits/stdc++.h>
#define For(i,a,b) for(int i=(a);i<=(b);++i)
#define Rep(i,a,b) for(int i=(a);i>=(b);--i)
#define ll long long
#define int long long
//#define ull unsigned long long
using namespace std;
inline int read()
{
    char c=getchar();int x=0;bool f=0;
    for(;!isdigit(c);c=getchar())f^=!(c^45);
    for(;isdigit(c);c=getchar())x=(x<<1)+(x<<3)+(c^48);
    if(f)x=-x;return x;
}

#define mod 1000000007
struct modint{
	int x;
	modint(int o=0){x=o;}
	modint &operator = (int o){return x=o,*this;}
	modint &operator +=(modint o){return x=x+o.x>=mod?x+o.x-mod:x+o.x,*this;}
	modint &operator -=(modint o){return x=x-o.x<0?x-o.x+mod:x-o.x,*this;}
	modint &operator *=(modint o){return x=1ll*x*o.x%mod,*this;}
	modint &operator ^=(int b){
		modint a=*this,c=1;
		for(;b;b>>=1,a*=a)if(b&1)c*=a;
		return x=c.x,*this;
	}
	modint &operator /=(modint o){return *this *=o^=mod-2;}
	friend modint operator +(modint a,modint b){return a+=b;}
	friend modint operator -(modint a,modint b){return a-=b;}
	friend modint operator *(modint a,modint b){return a*=b;}
	friend modint operator /(modint a,modint b){return a/=b;}
	friend modint operator ^(modint a,int b){return a^=b;}
	friend bool operator ==(modint a,int b){return a.x==b;}
	friend bool operator !=(modint a,int b){return a.x!=b;}
	bool operator ! () {return !x;}
	modint operator - () {return x?mod-x:0;}
	bool operator <(const modint&b)const{return x<b.x;}
};
inline modint qpow(modint x,int y){return x^y;}

vector<modint> fac,ifac,iv;
inline void initC(int n)
{
	if(iv.empty())fac=ifac=iv=vector<modint>(2,1);
	int m=iv.size(); ++n;
	if(m>=n)return;
	iv.resize(n),fac.resize(n),ifac.resize(n);
	For(i,m,n-1){
		iv[i]=iv[mod%i]*(mod-mod/i);
		fac[i]=fac[i-1]*i,ifac[i]=ifac[i-1]*iv[i];
	}
}
inline modint C(int n,int m){
	if(m<0||n<m)return 0;
	return initC(n),fac[n]*ifac[m]*ifac[n-m];
}
inline modint sign(int n){return (n&1)?(mod-1):(1);}

#define fi first
#define se second
#define pb push_back
#define mkp make_pair
typedef pair<int,int>pii;
typedef vector<int>vi;

#define maxn 500005
#define inf 0x3f3f3f3f

int n;


void solve1(){
	if(n==1){
		puts("*");
		puts("0");
		puts("1");
		return;
	}
	if(n==2){
		puts("*1\n01\n3");
		return;
	}
	string s,t;
	For(i,1,n-2) s+='*';
	s+='0',s+='*';
	t+='0';
	For(i,1,n-1)t+='1';
	cout<<s<<"\n"<<t<<"\n";
	modint res=C((n-1)+(n-2),n-2)+1;
	For(i,1,n-2)res+=C(n+i,i);
	cout<<res.x<<"\n";
}

void solve2(){
	string s,t;
	For(i,0,n-n/2-1) s+='*';
	For(i,n-n/2,n-1) s+='0';
	For(i,0,n-1) t+='0';
	cout<<s<<"\n"<<t<<"\n";
	cout<<(n/2+3)*(n/2)+(n&1)*(n/2+2)<<"\n";
}

signed main()
{
	n=read();
	solve1();
	solve2();
	return 0;
}
/*

*/

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3504kb

input:

3

output:

*0*
011
8
**0
000
7

result:

ok Accepted

Test #2:

score: 0
Accepted
time: 0ms
memory: 3532kb

input:

1

output:

*
0
1
*
0
2

result:

ok Accepted

Test #3:

score: 0
Accepted
time: 0ms
memory: 3564kb

input:

2

output:

*1
01
3
*0
00
4

result:

ok Accepted

Test #4:

score: 0
Accepted
time: 0ms
memory: 3580kb

input:

4

output:

**0*
0111
31
**00
0000
10

result:

ok Accepted

Test #5:

score: 0
Accepted
time: 0ms
memory: 3500kb

input:

5

output:

***0*
01111
119
***00
00000
14

result:

ok Accepted

Test #6:

score: 0
Accepted
time: 0ms
memory: 3576kb

input:

6

output:

****0*
011111
456
***000
000000
18

result:

ok Accepted

Test #7:

score: 0
Accepted
time: 0ms
memory: 3580kb

input:

10

output:

********0*
0111111111
99892
*****00000
0000000000
40

result:

ok Accepted

Test #8:

score: 0
Accepted
time: 0ms
memory: 3584kb

input:

20

output:

******************0*
01111111111111111111
31775330
**********0000000000
00000000000000000000
130

result:

ok Accepted

Test #9:

score: 0
Accepted
time: 0ms
memory: 3584kb

input:

30

output:

****************************0*
011111111111111111111111111111
37652369
***************000000000000000
000000000000000000000000000000
270

result:

ok Accepted

Test #10:

score: 0
Accepted
time: 1ms
memory: 3468kb

input:

50

output:

************************************************0*
01111111111111111111111111111111111111111111111111
637736708
*************************0000000000000000000000000
00000000000000000000000000000000000000000000000000
700

result:

ok Accepted

Test #11:

score: 0
Accepted
time: 1ms
memory: 3748kb

input:

100

output:

**************************************************************************************************0*
0111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
990322733
**************************************************00000000000000000000000000000000000000...

result:

ok Accepted

Test #12:

score: 0
Accepted
time: 0ms
memory: 3756kb

input:

200

output:

******************************************************************************************************************************************************************************************************0*
011111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

ok Accepted

Test #13:

score: 0
Accepted
time: 0ms
memory: 3556kb

input:

499

output:

************************************************************************************************************************************************************************************************************************************************************************************************************...

result:

ok Accepted

Test #14:

score: 0
Accepted
time: 1ms
memory: 3544kb

input:

888

output:

************************************************************************************************************************************************************************************************************************************************************************************************************...

result:

ok Accepted

Test #15:

score: 0
Accepted
time: 0ms
memory: 3596kb

input:

999

output:

************************************************************************************************************************************************************************************************************************************************************************************************************...

result:

ok Accepted

Test #16:

score: 0
Accepted
time: 1ms
memory: 3656kb

input:

1000

output:

************************************************************************************************************************************************************************************************************************************************************************************************************...

result:

ok Accepted