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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#237279#7687. Randias Permutation Taskucup-team918#WA 84ms16764kbC++202.8kb2023-11-04 13:42:052023-11-04 13:42:06

Judging History

你现在查看的是最新测评结果

  • [2023-11-04 13:42:06]
  • 评测
  • 测评结果:WA
  • 用时:84ms
  • 内存:16764kb
  • [2023-11-04 13:42:05]
  • 提交

answer

//#pragma GCC optimize(2)
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ll long long
#define N 205
#define mod 1000000007
#define pii pair<int,int>
#define mp make_pair
#define pb push_back
#define ls (rt<<1)
#define rs ((rt<<1)|1)
#define fi first
#define se second
#define INF 1e9
int qpow(int a,int b){
	int res=1;
	for(;b;b>>=1){
		if(b&1) res=res*a%mod;
		a=a*a%mod;
	}
	return res;
}
/*int fac[N],ifac[N];
int C(int n,int m){
	if(m>n||m<0||n<0) return 0;
	return fac[n]*ifac[n-m]%mod*ifac[m]%mod;
}
void init(){
	fac[0]=1;
	for(int i=1;i<N;i++) fac[i]=fac[i-1]*i%mod;
	ifac[N-1]=qpow(fac[N-1],mod-2);
	for(int i=N-2;i>=0;i--) ifac[i]=ifac[i+1]*(i+1)%mod;
}*/
/*struct node{
	int nxt,to;
}e[N<<1];
int cnt=1,head[N];
inline void add(int x,int y){
	e[++cnt].nxt=head[x];
	head[x]=cnt;
	e[cnt].to=y;
}*/
inline int lowbit(int x){return x&(-x);}
inline int read(){
  int x=0,t=1;char ch=getchar();
  while(ch<'0'||ch>'9'){
    if(ch=='-') t=-1;
    ch=getchar();
  }
    while(ch>='0'&&ch<='9'){
        x=(x<<1)+(x<<3)+(ch-'0');
        ch=getchar();
    }
    return x*t;
}
inline void write(int x){
	if(x<0) putchar('-'),x=-x;
	if(x>=10) write(x/10);
	putchar(x%10+'0');
}
#define base 137
int T,n,m,a[N][N],now[N],nxt[N],p[N];
int dp[N][50000];
string tmp[50000];
unordered_map<int,int>ma;
map<string,int>pos;
signed main(){
	ios::sync_with_stdio(false);
	cin.tie(0);cout.tie(0);
	cin>>m>>n;p[0]=1;
	for(int i=1;i<N;i++) p[i]=p[i-1]*base%mod;
	for(int i=1;i<=n;i++)
		for(int j=1;j<=m;j++)
			cin>>a[i][j];
	if(n<=20){
		int ans=0;
		for(int i=1;i<(1<<n);i++){
			int pos=0;
			for(int j=0;j<n;j++)
				if(i&(1<<j)){
					for(int k=1;k<=m;k++)
						now[k]=a[j+1][k];
					pos=j;
					break;
				}
			for(int j=pos+1;j<n;j++){
				if(!(i&(1<<j))) continue;
				for(int k=1;k<=m;k++)
					nxt[k]=now[a[j+1][k]];
				for(int k=1;k<=m;k++) now[k]=nxt[k];
			}
			int res=0;
			for(int k=1;k<=m;k++) (res+=now[k]*p[k])%=mod;
			if(!ma[res]){
				ma[res]=1;
				ans++;
			}
		}
		cout<<ans<<endl;
		return 0;
	}
	int w=1;
	for(int i=1;i<=m;i++) w=w*i;
	for(int i=1;i<=m;i++) p[i]=i;
	int num=0;
	do{
		num++;
		string s="";
		for(int i=1;i<=m;i++) s=s+(char)(p[i]+'0');
		pos[s]=num;tmp[num]=s;
	}while(next_permutation(p+1,p+m+1));
	dp[0][1]=1;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=w;j++){
			if(!dp[i-1][j]) continue;
			dp[i][j]=min(2ll,dp[i][j]+dp[i-1][j]);string t=tmp[j];
			for(int k=1;k<=m;k++) now[k]=t[k-1]-'0';
			for(int k=1;k<=m;k++)
				nxt[k]=now[a[i][k]];
			t="";for(int k=1;k<=m;k++) t=t+(char)(nxt[k]+'0');
			int tt=pos[t];
			dp[i][tt]=min(2ll,dp[i][tt]+dp[i-1][j]);
		}
	}
	int ans=0;
	for(int i=1;i<=w;i++) if(dp[n][i]) ans++;
	if(dp[n][1]==1) ans--;
	cout<<ans<<endl;
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 5980kb

input:

5 4
1 2 3 4 5
5 1 3 4 2
3 4 1 5 2
5 2 4 1 3

output:

8

result:

ok 1 number(s): "8"

Test #2:

score: 0
Accepted
time: 1ms
memory: 6540kb

input:

2 1
2 1

output:

1

result:

ok 1 number(s): "1"

Test #3:

score: 0
Accepted
time: 2ms
memory: 7840kb

input:

1 180
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
...

output:

1

result:

ok 1 number(s): "1"

Test #4:

score: 0
Accepted
time: 0ms
memory: 6312kb

input:

180 1
52 71 167 89 165 102 119 125 9 128 180 24 48 172 108 22 164 28 159 111 30 91 67 51 136 97 126 133 177 65 115 157 114 11 171 178 23 127 163 103 99 18 56 94 176 77 44 1 124 74 61 87 4 40 63 92 169 84 146 6 88 55 152 49 10 90 43 174 70 50 69 154 73 147 110 20 82 59 112 12 64 143 16 138 5 170 155 ...

output:

1

result:

ok 1 number(s): "1"

Test #5:

score: 0
Accepted
time: 2ms
memory: 6420kb

input:

2 90
1 2
1 2
1 2
1 2
2 1
2 1
2 1
2 1
1 2
2 1
1 2
1 2
1 2
2 1
2 1
2 1
2 1
1 2
1 2
1 2
1 2
2 1
1 2
2 1
1 2
1 2
1 2
2 1
2 1
1 2
2 1
1 2
2 1
1 2
1 2
2 1
1 2
2 1
2 1
2 1
2 1
1 2
2 1
2 1
2 1
2 1
1 2
1 2
2 1
2 1
1 2
1 2
1 2
2 1
1 2
2 1
2 1
1 2
2 1
2 1
2 1
2 1
2 1
2 1
2 1
1 2
1 2
1 2
2 1
1 2
1 2
2 1
1 2
1 2...

output:

2

result:

ok 1 number(s): "2"

Test #6:

score: 0
Accepted
time: 1ms
memory: 6408kb

input:

90 2
43 44 28 69 66 18 5 23 87 8 24 89 31 29 81 1 68 2 78 53 49 54 4 13 77 61 33 57 63 85 55 79 46 35 45 64 65 42 30 6 19 74 82 80 17 26 32 59 7 72 16 3 47 73 39 36 25 34 56 86 71 62 84 40 41 11 50 27 20 14 37 12 38 58 48 83 76 70 51 88 22 90 21 9 10 60 15 52 75 67
9 73 52 51 81 16 71 77 6 57 11 75 ...

output:

3

result:

ok 1 number(s): "3"

Test #7:

score: 0
Accepted
time: 0ms
memory: 7288kb

input:

3 60
2 1 3
3 1 2
3 2 1
1 2 3
1 2 3
3 2 1
3 1 2
2 3 1
2 1 3
3 1 2
2 3 1
2 3 1
2 1 3
3 2 1
3 1 2
3 2 1
1 2 3
2 1 3
2 1 3
2 1 3
2 3 1
2 3 1
2 3 1
3 1 2
1 2 3
3 1 2
2 3 1
2 3 1
2 1 3
1 2 3
3 1 2
2 1 3
2 3 1
2 3 1
2 3 1
3 1 2
2 3 1
1 2 3
1 2 3
3 2 1
3 1 2
3 1 2
2 3 1
1 3 2
3 1 2
1 3 2
1 2 3
1 3 2
1 3 2
3...

output:

6

result:

ok 1 number(s): "6"

Test #8:

score: 0
Accepted
time: 1ms
memory: 5892kb

input:

60 3
35 38 36 43 59 60 20 16 8 51 58 18 33 26 44 7 41 27 39 9 37 48 25 40 30 14 21 13 5 1 19 11 3 28 57 47 17 56 45 34 12 49 29 32 55 24 31 50 42 22 53 23 4 15 2 46 6 10 52 54
41 49 10 55 3 38 35 29 6 26 2 46 58 39 24 47 51 25 44 37 42 43 20 53 60 12 40 17 28 13 27 57 15 52 8 22 11 14 59 21 48 9 32 ...

output:

7

result:

ok 1 number(s): "7"

Test #9:

score: 0
Accepted
time: 0ms
memory: 5268kb

input:

4 45
1 3 4 2
2 3 4 1
4 1 3 2
4 1 2 3
1 4 3 2
3 4 2 1
2 3 4 1
1 3 2 4
2 1 4 3
4 2 3 1
4 1 3 2
1 3 4 2
2 4 3 1
4 2 3 1
1 3 2 4
3 2 1 4
2 3 4 1
3 2 4 1
1 2 4 3
4 1 2 3
4 3 2 1
3 4 1 2
1 3 2 4
2 4 3 1
4 2 1 3
2 3 4 1
4 2 1 3
4 2 3 1
1 2 3 4
1 3 2 4
1 4 3 2
3 2 4 1
2 3 1 4
1 3 4 2
3 1 2 4
1 3 2 4
3 2 4 1...

output:

24

result:

ok 1 number(s): "24"

Test #10:

score: 0
Accepted
time: 1ms
memory: 5752kb

input:

45 4
44 38 33 27 25 17 35 4 22 41 15 3 10 16 21 28 23 19 34 37 2 32 43 12 6 31 29 9 45 18 11 30 13 26 42 5 39 40 8 24 14 1 7 20 36
28 43 12 34 21 7 20 26 13 1 25 4 44 32 11 15 33 18 14 5 6 42 45 36 9 35 2 30 38 10 41 27 17 23 19 8 29 16 3 37 40 31 39 22 24
5 22 23 43 36 33 29 39 44 9 35 34 7 42 8 11...

output:

15

result:

ok 1 number(s): "15"

Test #11:

score: 0
Accepted
time: 2ms
memory: 6480kb

input:

18 10
13 4 18 16 1 8 17 6 14 2 10 12 5 9 3 11 15 7
1 7 15 13 12 2 17 18 16 11 9 8 6 14 3 4 10 5
1 9 3 4 6 14 5 10 12 13 7 8 16 2 15 17 18 11
2 10 16 3 17 8 4 13 12 11 5 7 14 9 1 15 18 6
7 9 4 14 10 2 17 6 8 16 1 13 12 5 11 18 15 3
13 4 16 10 5 2 9 1 11 3 18 8 6 12 15 14 7 17
9 14 18 17 2 12 16 10 15...

output:

1023

result:

ok 1 number(s): "1023"

Test #12:

score: -100
Wrong Answer
time: 84ms
memory: 16764kb

input:

10 18
9 6 4 8 3 7 10 1 2 5
10 9 8 3 5 6 1 2 7 4
8 2 5 4 9 3 1 7 6 10
10 5 2 8 1 6 4 7 9 3
2 3 5 4 10 9 6 8 7 1
6 7 8 10 5 3 4 1 9 2
10 6 4 2 1 5 3 8 9 7
6 8 9 1 2 4 5 3 7 10
7 6 3 1 5 9 2 10 4 8
10 5 7 4 9 1 2 6 3 8
5 4 6 9 3 7 8 1 2 10
5 9 8 2 7 1 3 10 6 4
5 2 10 3 7 1 4 6 9 8
1 10 2 6 5 7 8 9 3 4
...

output:

252907

result:

wrong answer 1st numbers differ - expected: '252941', found: '252907'