#include using namespace std; #define int long long #define ii pair #define app push_back #define all(a) a.begin(), a.end() #define bp __builtin_popcountll #define ll long long #define mp make_pair #define f first #define s second #define Time (double)clock()/CLOCKS_PER_SEC #define debug(x) std::cout << #x << ": " << x << '\n'; const int N = 10001; bool p[N]; signed main() { #ifdef HOME freopen("input.txt", "r", stdin); #else #define endl '\n' ios_base::sync_with_stdio(0); cin.tie(0); #endif for (int i = 2; i < N; ++i) p[i] = 1; for (int i = 2; i < N; ++i) { if (p[i]) { for (int j = i * 2; j < N; j += i) { p[j] = 0; } } } int n; cin >> n; int m = n; while (m <= 2 || !p[m]) ++m; assert(m <= n + 40); for (int i = 0; i < n; ++i) { cout << i << ' ' << (i * i) % m << endl; } }