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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#308278 | #3837. The Matching System | Crysfly | AC ✓ | 1ms | 3756kb | C++17 | 2.9kb | 2024-01-19 20:19:24 | 2024-01-19 20:19:24 |
Judging History
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