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Cod sursa(job #983327)
#include<cstdio>
#include<algorithm>
using namespace std;
void solve_kpar(int n,int k)
{
for(int i=1;i<=n*n;i++)
printf("%d%c",i,i%n==0?'\n':' ');
}
int a[1005][1005];
void solve_2l(int i,int n,int k)
{
int nr=(i-1)*k;
for(int j=1;j<=k;j++)
a[i][j]=++nr;
for(int j=1;j<=k;j++)
a[i+1][j]=++nr;
a[i][k]++;
a[i+1][1]--;
}
void solve_npar(int n,int k)
{
for(int i=1;i<=n;i+=2)
solve_2l(i,n,k);
int nr=n*k+1;
for(int i=1;i<=n;i++)
for(int j=k+1;j<=n;j++)
a[i][j]=nr++;
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
printf("%d%c",a[i][j],j==n?'\n':' ');
}
void solve_3l(int n,int k)
{
}
void solve_nimpar(int n,int k)
{
for(int i=1;i<n;i+=2)
solve_2l(i,n,k);
for(int i=1;i<k;i++)
a[n][i]=(n-1)*k+i;
a[n][k]=n*k+1;
int nr=n*k+1;
for(int i=1;i<=n;i++)
for(int j=k+1;j<=n;j++)
a[i][j]=nr++;
a[1][k+1]=n*k;
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
printf("%d%c",a[i][j],j==n?'\n':' ');
}
int main()
{
freopen("tablete.in","r",stdin);
freopen("tablete.out","w",stdout);
int n,k;
scanf("%d%d",&n,&k);
if(k%2==0) solve_kpar(n,k);
else
if(n%2==0)
solve_npar(n,k);
else
solve_nimpar(n,k);
return 0;
}