Contest1230/A.cpp

#include<bits/stdc++.h>
using namespace std;
int main(){
    int a[21][21];
    a[0][0] = 1;
    for(int i = 0;i <= 20; i++){
        a[i][0] = a[i][i] = 1;
    }
    for(int i = 1; i <= 20; i++){
        for(int j  = 1; j < i; j++){
            a[i][j] = a[i-1][j-1] + a[i-1][j];
        }
    }

    int n;
    while(cin >> n){
        for(int i = 0; i < n; i++){
            for(int j = 0; j < i; j++){
                cout << a[i][j] << " ";
            }
            cout << a[i][i] << endl;
        }
        cout << endl;
    }
}