43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
#include <cstdio>
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#include <cstring>
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#include <algorithm>
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using namespace std;
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const int V = 105;
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int n, m, ans[V][V];
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bool vis[V][V];
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int main() {
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int i, j, k;
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while(~scanf("%d%d", &n, &m)) {
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memset(ans, 0, sizeof(ans));
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memset(vis, false, sizeof(vis));
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for(i = 0, j = 1; i < m; ++i) {
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ans[i][0] = j;
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vis[i][j] = true;
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j = j == n ? 1 : j + 1;
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}
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for(i = 0; i < m; ++i) {
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if(ans[i][1] != 0)
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continue;
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int now = m % n + 1;
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for(j = i; j < m; j += n) {
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if(now == ans[j][0])
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now = now == n ? 1 : now + 1;
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ans[j][1] = now;
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vis[j][now] = true;
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now = now == n ? 1 : now + 1;
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}
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}
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for(i = 0; i < m; ++i)
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for(j = 2, k = 1; j < n; ++j) {
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while(vis[i][k])
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k++;
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ans[i][j] = k++;
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}
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for(i = 0; i < m; ++i) {
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for(j = 0; j < n - 1; ++j)
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printf("%d ", ans[i][j]);
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printf("%d\n", ans[i][n - 1]);
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}
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}
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}
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