#include<iostream> #include<cmath> #include<cstdio> #include<cstring> using namespace std; int main() //主函数入口 { int i = 0,j = 0,n; int arr[31][31] = {0}; arr[0][0] = 1; cin >> n; for(i = 1; i <= n; i++) { for(j = 1; j <= i; j++) { arr[i][1] = i; arr[i][j] = arr[i-1][j] + arr[i-1][j-1]; arr[i][i] = i; } } for(i = 1; i <= n; i++) { for(j = 1; j < i; j++) { cout << arr[i][j] << " "; } cout << arr[i][i]; cout << endl; } return 0; //结束整个程序 }