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| #include <iostream>
using namespace std;
int n;
int main() {
scanf("%d", &n);
for (int r = 0; r < 2 * n + 1; ++r) {
int d = abs(r - n);
if (d)
printf("%*s", 2 * d, "");
int c = 0;
while (c < n - d)
printf("%d ", c++);
printf("%d", c--);
while (c >= 0)
printf(" %d", c--);
printf("\n");
}
return 0;
}
|