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#include <cstdio> #include <cstring> #include <algorithm> #include <vector> #include <string> using namespace std;
const int maxn = 10; int n, cnt;
void print(int x) { printf("%d%c",x, ++cnt % 20 == 0 ? '\n' : ' '); }
int main() { freopen("shuttle.in", "r", stdin); freopen("shuttle.out", "w", stdout); int n, cnt = 0; scanf("%d", &n); int p = n, sig = 1, sum = n * (n + 2); print(p); for (int i = 1; i < n; ++i) { for (int j = 0; j < i; ++j) { print(p += 2 * sig); } print(p += sig); sig = -sig; } for (int i = 0; i < n; ++i) { print(p += 2 * sig); } sig = -sig; for (int i = n - 1; i > 0; --i) { print(p += sig); for (int j = 0; j < i; ++j) { print(p += 2 * sig); } sig = -sig; } printf("%d\n", --p); return 0; }
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