#include <stdio.h>
#include <stdlib.h>
int main()
{
int N, A, B, i, j, S = 0, k = 1;
scanf("%d %d %d", &N, &A, &B);
int M[N][N];
for(i = 0; i < N; i++)
{
for(j = 0; j < N; j++)
{
if(k <= 3)
{
M[0][0] = A;
M[0][1] = B;
S = A+B;
M[0][2] = S;
k++;
}
else
{
if(j == 0)
{S = S + M[i-1][N-1];}
else
{S = S + M[i][j-1];}
M[i][j] = S;
}
}
}
for(i = 0; i < N; i++)
{
for(j = 0; j < N; j++)
{
printf("%d ", M[i][j]);
}
printf("\n");
}
return 0;
}
