46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
#include <iostream>
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#include<string.h>
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#include<stdio.h>
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#include<algorithm>
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using namespace std;
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int arr[300];
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int n,m;
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int dp[300][300];
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int main()
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{
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int t;
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scanf("%d",&t);
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while(t--)
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{
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scanf("%d%d",&n,&m);
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for(int i=0;i<m;i++)scanf("%d",&arr[i]);
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memset(dp,0,sizeof(dp));
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dp[1][0]=1;
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for(int i=2;i<=n;i++)
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{
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for(int j=0;j<i;j++)
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{
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for(int k=0;k<m;k++)
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{
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if((arr[k]-1)%i==j)continue;
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if((arr[k]-1)%i<j)dp[i][j]=dp[i-1][j-(arr[k]-1)%i-1];
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if((arr[k]-1)%i>j)dp[i][j]=dp[i-1][i-1-((arr[k]-1)%i-j)];
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if(dp[i][j])break;
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}
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}
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}
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int ok=1,ans=0;
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for(int i=0;i<n;i++)if(dp[n][i])ans++;
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printf("%d\n",ans);
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for(int i=0;i<n;i++)
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if(dp[n][i])
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{
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if(ok)ok=0;
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else printf(" ");
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printf("%d",i+1);
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}
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printf("\n");
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}
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return 0;
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}
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