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Cod sursa(job #809163)
#include <cstdio>
using namespace std;
const int MaxN = 260;
int N, Sol[MaxN][MaxN];
inline void Push(int i, int x) {
Sol[i][++Sol[i][0]] = x;
}
void BuildSol() {
for (int i = 1, s = 1; i <= N; ++i)
for (int j = i+1; j <= N; ++j, ++s)
Push(i, s), Push(j, s);
}
void Read() {
freopen("lacate.in", "r", stdin);
scanf("%d", &N);
}
void Print() {
freopen("lacate.out", "w", stdout);
printf("%d %d\n", N*(N-1)/2, N-1);
for (int i = 1; i <= N; ++i, printf("\n"))
for (int j = 1; j < N; ++j)
printf("%d ", Sol[i][j]);
}
int main() {
Read();
BuildSol();
Print();
return 0;
}