54 lines
1.1 KiB
C++
54 lines
1.1 KiB
C++
#include "stdio.h"
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#include "string.h"
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#include "iostream"
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#include "algorithm"
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using namespace std;
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int inf=0x3f3f3f3f;
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int Fabs(int a)
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{
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if (a<0) return -a; else return a;
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}
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int Min(int a,int b)
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{
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if (a<b) return a;
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else return b;
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}
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struct node
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{
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int num;
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int x[210];
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}mark[210];
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int main()
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{
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int n,m,i,j,k,sum,ans;
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int dp[210][210];
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while (scanf("%d%d",&n,&m)!=EOF)
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{
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if (n==0 && m==0) break;
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memset(mark,0,sizeof(mark));
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for (i=1;i<=n*n;i++)
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{
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scanf("%d%d",&j,&k);
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mark[j].num++;
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mark[j].x[mark[j].num]=k;
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}
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for (i=1;i<=n;i++)
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sort(mark[i].x+1,mark[i].x+1+n);
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memset(dp,0,sizeof(dp));
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for (i=1;i<=n;i++)
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for (j=1;j<=m-n+1;j++)
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for (k=1;k<=n;k++)
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dp[i][j]+=Fabs(mark[i].x[k]-j-k+1);
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ans=inf;
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for (j=1;j<=m-n+1;j++)
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{
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sum=0;
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for (i=1;i<=n;i++)
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sum+=dp[i][j];
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ans=Min(sum,ans);
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}
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printf("%d\n",ans);
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}
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return 0;
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}
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