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不知道错哪了(附源程序)#include<stdio.h>
main()
{int n,b,b1,b2,j,l,m;
long k,i;
int a[5][5],min[5][5],max[5][5];
scanf("%d%d%ld",&n,&b,&k);
for(i=0;i<n;i++)
for(j=0;j<n;j++)
scanf("%d",&a[i][j]);
for(i=0;i<n;i++)
for(j=0;j<n;j++)
{max[i][j]=a[i][j];
if(i>0&&j>0&&max[i-1][j-1]<max[i][j])
{for(m=i+1-b>0?i+1-b:0;m<=i;m++)
for(l=j+1-b>0?j+1-b:0;l<=j;l++)
if(max[i][j]>max[m][l])max[m][l]=max[i][j];}
else {if(i>0&&max[i-1][j]<max[i][j])
for(m=i-1;m>=0&&m>i-b;m--)
if(max[i][j]>max[m][j])max[m][j]=max[i][j];
else break;
if(j>0&&max[i][j-1]<max[i][j])
for(m=j-1;m>=0&&m>j-b;m--)
if(max[i][j]>max[i][m])max[i][m]=max[i][j];
else break;
}
}
for(i=0;i<n;i++)
for(j=0;j<n;j++)
{min[i][j]=a[i][j];
if(i>0&&j>0&&min[i-1][j-1]>min[i][j])
{for(m=i+1-b>0?i+1-b:0;m<=i;m++)
for(l=j+1-b>0?j+1-b:0;l<=j;l++)
if(min[i][j]<min[m][l])min[m][l]=min[i][j];}
else {if(i>0&&min[i-1][j]>min[i][j])
for(m=i-1;m>=0&&m>i-b;m--)
if(min[i][j]<min[m][j])min[m][j]=min[i][j];
else break;
if(j>0&&min[i][j-1]>min[i][j])
for(m=j-1;m>=0&&m>j-b;m--)
if(min[i][j]<min[i][m])min[i][m]=min[i][j];
else break;
}
}
for(i=0;i<k;i++)
{scanf("%d%d",&b1,&b2);
printf("%d\n",max[b1-1][b2-1]-min[b1-1][b2-1]);
}
}
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