求助，样例错误，玄关

#include<bits/stdc++.h>
using namespace std;
const int N=1e2+1,M=1<<21+1;
int a[N][M],n,p[N],m,k;
int main(){
	cin>>n>>m>>k;
	for(int i=1;i<=n;++i){
		for(int j=1;j<=k;++j){
			int g;cin>>g;
			p[i]|=1<<(g-1); 
		}
	}
	for(int i=1;i<=n;++i){
		cout<<p[i]<<endl;
	}
	memset(a,0x3f3f3f3f,sizeof(a));
	a[0][0]=0;
	for(int i=1;i<=n;++i){
		for(int j=1;j<=(1<<(m+1))-1;++j){
			a[i][j]=a[i-1][j];
		}
		for(int j=1;j<=(1<<20);++j){
			a[i][j|p[i]]=min(a[i][j|p[i]],a[i-1][j]+1);
		}
	}
	cout<<a[n][1<<(m+1)-1]<<endl;
	return 0;
}