题解

#include<iostream>
using stdcin;using stdcout;
int main(){
int n;cin>>n;
for(int i=0;i<n;i++){
int k=i2+1;
int f=(n2-1-k)/2;
while(f--){cout<<" ";}
while(k--){cout<<"*";}
cout<<"\n";
}
}