/*line >= 10情况自行考虑*/
int main(){
cout << "please input the line numbers" << endl;
int line = 0;
cin >> line;
for (int i = 1; i <= line; i++){
for (int j = 0; j < line - i; j++){
cout << " ";
}
for (int k = 0; k < i; k++){
cout << k + 1 ;
}
for (int t = i - 1; t > 0; t--){
cout << t;
}
cout << endl;
}
return 0;
}
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