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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 |
---|---|---|---|---|---|---|---|---|---|
#84191 | #5658. Problem Setting | Crysfly | 63.636364 | 81ms | 97128kb | C++17 | 2.9kb | 2023-03-05 21:32:36 | 2023-03-05 21:32:40 |
Judging History
answer
#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 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 200005
#define inf 0x3f3f3f3f
int n,m;
char str[21][maxn];
int cnt[maxn],mxs;
modint f[1<<20][21],g[1<<20];
modint val[maxn];
signed main()
{
n=read(),m=read();
initC(n+5);
// For(i,1,n){
// For(j,1,i)
// val[i]+=fac[i]*ifac[i-j];
// }
For(i,1,n)val[i]=val[i-1]+ifac[i-1];
For(i,1,n)val[i]*=fac[i];
For(i,0,m-1)cin>>(str[i]+1);
For(i,1,n){
int s=0;
For(j,0,m-1)if(str[j][i]=='H')s|=(1<<j);
++cnt[s];
}
g[0]=val[cnt[0]]+1;
// 0,1 : 3*1,3*1
// 1*1
mxs=(1<<m);
For(s,0,mxs-1){
For(i,0,m-1)if(f[s][i].x){
For(j,i+1,m-1)if(!(s>>j&1)){
if(cnt[s|(1<<j)]) g[s|(1<<j)]+=f[s][i]*val[cnt[s|(1<<j)]];
f[s|(1<<j)][j]+=f[s][i];
}
}
if(g[s].x){
For(j,0,m-1)if(!(s>>j&1)){
f[s|(1<<j)][j]+=g[s];
if(cnt[s|(1<<j)]) g[s|(1<<j)]+=g[s]*val[cnt[s|(1<<j)]];
}
}
}
modint res=0;
For(i,0,mxs-1) res+=g[i];
res-=1;
cout<<res.x;
return 0;
}
详细
Test #1:
score: 4.54545
Accepted
time: 0ms
memory: 94352kb
input:
3 1 EHE
output:
9
result:
ok 1 number(s): "9"
Test #2:
score: 4.54545
Accepted
time: 8ms
memory: 94196kb
input:
10 6 EHEEEHHEEH EHHHEEHHHE EHEHEHEEHH HEHEEEHEEE HHEEHEEEHE EHHEEEEEHE
output:
33
result:
ok 1 number(s): "33"
Test #3:
score: 4.54545
Accepted
time: 17ms
memory: 95016kb
input:
99930 1 HHEEHEEHEEEEEHHEEEEHEEHEEEEHEEEEEEEEEEHEEHHHHHEEHEHHHEEHHHEHHHHEEHHEHHHHHHEHEEEHHHHEEHHHEHHEHHEEEEHHHHHEEEHHEHEEEHEEEEHEEHHHEHHHHEHHEEEEHEHEEEEEHEEHHEEHEHEHHEEHEEHHHHEHEEHHHEHEHHHEEEEHEEHEHEHEHHEHHEEHHEEHHEEHEHHEEHHEHEHHEHHHHHEHHHHEEEHHHHEEHEHHHEEEHHEHHEHEHHHEHHEEHEHHEEHEEEHHEHEEEHHHEEEEEHEE...
output:
958738013
result:
ok 1 number(s): "958738013"
Test #4:
score: 4.54545
Accepted
time: 11ms
memory: 95080kb
input:
100000 1 EEEHEHHHEEEEHHEEHHHHEHEEHEEHHEEHEEEEHEEHHEHHHHHHHEEHHHHEEEHEHHEEEEEEEEEHEEEEHEEEEHEHEEHEHHHEEEHHHEEHEEEEEEEEHEEEEHHHHEHHEHHHEEEHHHHHEHEHEHEHEHHHEHHEEEEEHHHHEHHEEHHEHHEHHEEHEEEHHEEHEEHEHHHEHHEHHHEHEHHEEHEHHHEEHHEHEEHHEEHHHHEEHHHHHEHEEHHEHHEHHEEEHEHEEEHHEHEHHEHEHEEEHHHEEHHEHEEHHEHHHHEEEHHHEHE...
output:
141886138
result:
ok 1 number(s): "141886138"
Test #5:
score: 4.54545
Accepted
time: 51ms
memory: 96940kb
input:
100000 16 EHEEEHEHHEEEEEHHHEHHHEEHHHHEHEHEEEHHEEHHEHEEHHEEEEEEHHEEHHEHHHHEHHEEEEHEEEEHHEHHEEEEEHHHEHEEHEHEEEHEHHHHEEHHEHHEHEHEEEEEHHEHHEEEHEEEHHHEHEEEHHEEHEHHEHHHEEHHHEHHEHEEHHEEEHHEHEHHHEHEEHHHHHEHHHEHHEEEEEHEEHEHHEHHHEHHHEHHHEHHHEEEEHHEHHEEHHHEEHHEEHHEHHEEEEEEHHHEHHEEEEHEHEHEEEHEHHEEHHEHHEHHEEHEHE...
output:
550365804
result:
ok 1 number(s): "550365804"
Test #6:
score: 4.54545
Accepted
time: 81ms
memory: 96908kb
input:
100000 16 EHEHEHHEHEEEEEHEHHEHEEEHEEHHEEEEHHEEEHEEEHEEEEEEEHHHHEHEEHEEEHEEEEHHEEHHEEHHHEHEEHEEEEHEEEEEEEHEHHEEEHHHEHHHHHEEEEEHHEHEHHHHHHHHEEHEHHHHEHEHHEEEEHHHEHEEHEEEHEEEEHHHHHHEHEEHHEHHHEEEEHEEEHEHEEEHHEHHEHHHEHEEHHHEEEEHHHEEEEEEHEHEHEHEHHHEHHHHHHEHHEEEEEHHEHHHHHEEHEEHHHHHEHHHEEEHHEHEEHHHHHEEEEHEHH...
output:
304783114
result:
ok 1 number(s): "304783114"
Test #7:
score: 4.54545
Accepted
time: 55ms
memory: 96964kb
input:
99913 16 HEHHHEEEHEEEEEEHHEEEHHEHEEEEEEHHHHEHEEHEEHHHHEEEHHEEHEHEHHHEHEHHEEHEEEEHEEHEHEHHEEHEHHHEHEHEHEEHEEHEEHHHEHHEEHEHHEHEEEEEEEEEEHHHHHHEEHHHHEEHEHEHHHHEEHEEHHHHEEEHEEHHHEEHHEHEHEEHHHHHEEEHHEEEEEEEEHEHHHEHHHHEHHHEHEEEEEEEEEEHEEEEEEHEEHEHEHHHEEEHHHEHEEHEEHHHEHEEEHHHEEEEHEHHEEHEEEHEHEHEHHHEEHHEEEH...
output:
102498247
result:
ok 1 number(s): "102498247"
Test #8:
score: 4.54545
Accepted
time: 61ms
memory: 96876kb
input:
100000 16 EHEHEHEHHHHEHEHEHEEEHEEEEHEHEEHHEHHEEHHEHEHEHEEHEHEHHEEEHHEHHEHHEHEEHEHEHHEEEEEHHEEHEHHHEHHEHHEHHEHHEEHEHHHHHEHHHHEHEEEEHHHEHEHEEHHHHEEHHEHHHEHHEEHHEEHHEEEEEHEEHHEHEEHHEEHEEEEEHEHEEHEHHHHEHEEHEEEHHEEEEEHEHEEHEEEEEEHEEHEHEEEHEEEHEEHHHHEEHEHHEHEHEEHHHEHEHEHHHEEEHEEHEEEHEEEHHHEEEEEEEEEHEHEEEE...
output:
52676620
result:
ok 1 number(s): "52676620"
Test #9:
score: 4.54545
Accepted
time: 63ms
memory: 97004kb
input:
99989 16 EEEHEHEEEHHEHHEHHEHEEHEHEHHEEHEEEEEHEHHEEEHEHEHEHEHHHEHEEEEHHHEHHHHEHHEEHEHHHEHHHHHHHEHEHHHEHEHEEHHEHEHHEEEHEHHEEEEEEEHEHHEEEEEHHHHHHEHHHEHEHHEHHHHHEHEHHHEEEEEEEHEHEEEEHEHEEHHHHEHEEHHHEEEEHEHEHHEHEHHEHEEHHHHEHHEHHEHHEEEEEHHHEEHHEHEEHEHEEHHHHEHHHHEEHEHEEEHEEEHHHHEHEEHHEHEHHHHEEHHHEHEHHEHEEHH...
output:
901615554
result:
ok 1 number(s): "901615554"
Test #10:
score: 4.54545
Accepted
time: 64ms
memory: 97128kb
input:
100000 16 HHEHHEHEEHEHEEHEEEEHHHEEHHHHEEHEEHHHEHHHHEEHEEHEHHHHHHHHHHEHEHEEEEHEEEEEHHHEEHEHEEHEEEEEEHHHHEHEHEEHHHHHEEHEEHHHEEHEEHEEEEHEEEEHHHHHEEHHHHEEHHEEHHHEHEHHHHHHHEEEEEHHHEEHHHEEHEHHHEEHHEEEHHHHEHHEHEHEHEHEEHEEEHHHHHEHHEEEEHEEEHHHHEHEHEHHEEEEEHHEEHHHHEEEHEEHHHEEHHEEEEEEEHHHHHHEHHHHHEHEEHHHHHHHHH...
output:
691375190
result:
ok 1 number(s): "691375190"
Test #11:
score: 4.54545
Accepted
time: 76ms
memory: 96768kb
input:
100000 16 EEHEHHEEHHEHEHHHEEHEHEHEEEEHHEEEHHEEHHHEEEEHEEHHHEEHHEEHEHEHHEEHEHHEEEHEEHHHEHEEHHEHEEHHHEHEEEEEHEEHHHHEEEEEEHHHEEHHEHHHEEHHEHHHEEEEEHHHHEHHHEHEEHEEHHEEHEHHHEHEHHHHHEHHEEEHEEHHEEHHEHEEEEHEEHHHEHEHHHEEEEHHHHEHEHEEEHEHHEHEHHHHEEEEHHHEEEHEHHEHHEHHEHEEEEHEHEHHEHHHHEEHHEHEHEHHEHEEEHHHHEEHHHHEHH...
output:
543699219
result:
ok 1 number(s): "543699219"
Test #12:
score: 4.54545
Accepted
time: 69ms
memory: 97080kb
input:
99990 16 EEEEEHHHEEHHEEEHHEHEEHHHHHHHEHHEHEEEHEHEHEEHEHHEEHHEHHEEHEEEHHHHEHHHHEEHEHHHEEEEEEHEHEEEEEEHHHHHEEHEHEHHEHEHEEEHHHHHHEHHEEEEEEHEEHEHHHHHHEHEHHEHHHEEEEHEHEEHHEHEEHHHHHHEHEEHEEHHHEHHEHHEEHEHEHHEEHHHEHHHEHEHEHEEEEHHHHHEEHHEHHHHHHHEHEEHHEHEHEEEHEEHEHHHEEEHEEHHHEEHEEEHEEHEEHHHHEHHHHHEHEEHEHHEHHH...
output:
128876794
result:
ok 1 number(s): "128876794"
Test #13:
score: 4.54545
Accepted
time: 60ms
memory: 96864kb
input:
99912 16 EHEEEEHHEEEHEHHEEHHEHEEEHHEHHEEEHEHEHHEHEEHEHHHEEEEHHHHEHHEEHEEHEHHHEEEHHEHHEHEEHEEEHHHEEEEEHHEEHEHHEEEHHHHEHHEEEHHHEHEHEEEEEHHHEEEHHEHEHHHHHEHHEEEHHHEEEHHEEEEHHEHEHHHHHHHEHEEEEHHEHEEEHEHEEEEHHHHEHEHEEEEHEHEEEEHHEHEEHEHHHHEHHHHEHHHEEHEEEHHEHHHHHHEHEEEEEHHHHEHEHHHEHHHHEEHEHHHEEEHEEEEHHEEEEEH...
output:
334603270
result:
ok 1 number(s): "334603270"
Test #14:
score: 4.54545
Accepted
time: 63ms
memory: 97028kb
input:
100000 16 HHEEHHEEHHEHHEEEEHEHEHHEEHEEHHEHHHHEHHEEEEEHHEEHHEHEEHHEHHEEEHHEEHEEEHHEEEHHEHHHHHHHHEEEHHEHHEHHEEEHEEEEEEEEEHHEEHEHHEHHEEEHHEHEEHHHHHHEEEHHEEEEHHEEEEHHEEHHHEHHEEEHEEEEHEEEHHEHEHEHEEEHHHEEHEEHHHEEHHEEHEHEEEHEHEHHHEHHHEEHEEHEHHEEEHHHEEEHEHEHEEEHEHHEEEEEEHHHEHHEHHEEEHHHEEEHHEHEHEHEHHHHEEEHHH...
output:
734499631
result:
ok 1 number(s): "734499631"
Test #15:
score: 0
Runtime Error
input:
99985 20 HHEEHEHHEEHHEHEEHEEEHEEHHHEHEHHEHEHEHEHEHEEEHEEHHHEEEEHHEEHHHHEEEEEHHHEEEHHEHHEHEEHHEEHEEHEEHHHEHEHEHHHHEEHEEHEHHEEHEHHEHHEEHEEEHHEEHHEEEEEEEHEHEEHEEEEEHHEHEEHEHEHEEHHEEHEHHEEHEEEHHHEHEEHHEEHEHEHEHHEEEHHEEEEEEEEHEHHHHHHEEHEHHHHEEEEEEEEHHEHEHHHHHEEHEEHEEHHHEHEEEHHHHEHEHEHHEEHEHEEEEHHHHHHEEEH...
output:
result:
Test #16:
score: 0
Runtime Error
input:
100000 20 HHEHHEEEHEEEEEEHHEEHEHHEHHHHEEEHHHEHHEHEEEEHHHHHHEHHHHHEHEHEHEEEHHEEEHEEHHEHEHHHEHEHEEEHHEEEHHEEHEHHEEHEEEHEHEEHHEEEEEHEEEEHHHHHHHHHHHEHHHHHHEEEHEHEHHEEEEHHHHEEHHEEHEHEHHHEHEEHHEEHEHHEHEEHHHHEEHHHEHHHHEEHHHHHEEEEEEEEEEHEEHEHHHHEEHEHEHHEEEEHHHHHEEEHHHHHHHHHHEEHEHEHEEHEEEHHHEEEEEHHEEEEHEEHHE...
output:
result:
Test #17:
score: 0
Runtime Error
input:
99974 20 HHEEHEEEHEHEHEHEHHHEEHEEEHHHHEHHHHHHEHEHHHEEEHEEEHHHEHHEEEHEHEHEEHEHHEHHEEEEHEEHHHHEHEEHHEHHEEEHEEHEHEEEEHHEEEEHHHEHEEHEEHEEHEEHHHHHEHEEHEHEEHHEHHEEHEEHEEEHEHHHHHEEEEHEEHHHHEHHHHEHHEEEHEEHHHEHHEEEHHEHHEHHEEEEHHEHHEHEHHEHEEHHEEHEHEHEEEEEHEEEHEEEEHEHHHHHHHHHEHHHHEHHHEEHEHEHEEEHEHHHEHEHHHHHHHH...
output:
result:
Test #18:
score: 0
Runtime Error
input:
99916 20 HEHHHHEHEHEHEHHHEHEEEHHEEEHEHHEEEHEEHEEHEEHEHHHHHHEHHEEEEEEEHHEEHEHHHEEEEEEHEHEHEEEHHHEHHHEHHEHHEEHHHEEHHHHHHEHEHHEHHEHHHHEHEEEHHHHEHEEEEEEEHEHHEHEEHEEEEHEHHHEEHEEEHEHEEEHHHEEEEEEHHHHHHHHHHHHEEEHHEHHEHHEEEHEEEEHHHEEEEHHHEEEEHEHEEHHEEEEHEEEHHEHEEHHEEEHEHEEEHEEHEEEHHHEHEHHEHEEEHHHEEEEEHHEHHEH...
output:
result:
Test #19:
score: 0
Runtime Error
input:
100000 20 HEHEHEHEHEEEHHEHEHHHEHHEEEEEEHEEHHEEEHEHHHHEHHEHHHEHEHEHEEEEEHEEHHEHEEHHHHHEHEHEHEHHHHHHHHHEHEHEHHHHEEEHEEEHHEHEEHEHHHEHHHEHEEHHHEEEEHEHEHHEHEHEEHHEEHHHEEHEHHEHEHHEEHEHHHHEEEEHHEEHEEEEHHEEHHEHHEHEEHEEEEEHEHEHHHHEHHHHEHEHEHEEEHEEHEHHHHHHHEHHHHEEEEHHHEEEEHEHEHHEEEHHEEEHEHEHEEEEHEEHEEHHEEEEEE...
output:
result:
Test #20:
score: 0
Runtime Error
input:
99908 20 HHEHHEEEHHHHHEHHHEEHHEHEHEHHHHEEEEEEHEEHHHHHEEEEEEEHEHEEHHEHEHEEEEHEEHEHEEEEHEHHHEHHEHHHEEHHHHEHEHHHEHHHEHHHEEHHHEEEEHEHEEEHHEEEEEHHEEHEHEEEHEEHEHHHEEHHHEHHHEEEEHEEEEHHEHEHEHHHHEHEEHEEHEHHHEEHHHHEHEHHHHHHHHEEEHHEHEHHHHEEHEHEHEHHHEEHEHEHEEHEEEHEHHEEHEEEEEHHHHEHEHHEHHHHHEHHHHEHEHEHEEHEEEEHHEE...
output:
result:
Test #21:
score: 0
Runtime Error
input:
99923 20 EHEHEHHEHHEHEEEHEEHHHEHHHHHHHEEEEHEEHEHEEHEEEHEHEHHHEEHEEHHHHHEEHHHHEHEEEEHEEEHEEHEHHEHHEHEEHHEEEHHHHHEEEEHEEEHHHHHHHEEEEHHHEEEHHHEEHHHEEHHHHHHEHEHHEHEEEHHEHHHEEHHHHEHEEHHEEEHHEHEHHEHHEHEHHEEHHEHEHHEEEEHHEHHEHHEHHEHEEEEHEHEEHEHHHHEHHHEHEEEEHHHEHEEHEHEEEHHEEHEHHHHHEEHEHEEHHHHHEHHEHHHHEHHHHEE...
output:
result:
Test #22:
score: 0
Runtime Error
input:
100000 20 EHEEHEHEHHEEEHHHEEEHEHHEHEHEHEHEEEHHEHEHEHEHEHEEHEEEHEEEHEEEEEEEHHEEHHHEEEHEEHHHEEHEHEEEEHHHEEEHEHHHEHHEEEEEEHHEEEEEEEEHHEEHHEHEEHHHEEHEEEEEHEHHHHHEEHHEEHEEHHEEHEHHHEEHEHEHEEEEEHHEEEHHHHEEHHEEHEEEEEEEEHHEHEEHEHHEEHHEHHHHHEEEHHEEEEEHHHHEHHHHEHHHHEEHEEHEHEEHHHHEEEEHHEEEHEHEHEEHHHHEEEHHHHEHEE...