26 lines
641 B
C++
26 lines
641 B
C++
#include<stdio.h>
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#include<string.h>
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#include<stdlib.h>
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#define NN 5010
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#define Min(a,b) (a>b?b:a)
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int set[NN];
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int dp[1010][NN];
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int main()
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{
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int t,k,n,i,j;
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scanf("%d",&t);
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while(t--){
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scanf("%d%d",&k,&n);
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k += 8;
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for(i=n;i>=1;i--)
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scanf("%d",&set[i]);
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for(i=1;i<=k;i++){
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dp[i][i*3] = dp[i-1][i*3-2] + (set[i*3-1] - set[i*3])*(set[i*3-1] - set[i*3]);
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for(j=i*3+1;j<=n;j++)
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dp[i][j] = Min(dp[i][j-1],dp[i-1][j-2] +(set[j-1] -set[j])*(set[j-1] - set[j]));
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}
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printf("%d\n",dp[k][n]);
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}
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return 0;
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}
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