题解

#include<stdio.h>
#include<iostream>

std::string operator*(std::string s,int v){
    std::string r="";
    while(v--) r+=s;
    return r;
}
int main() {
    std::string s;
    std::cin>>s;
    for (int i=2,j=1;i>=0&&j<=5;i--,j+=2){
        std::cout<<(std::string)" "*i<<s*j<<std::endl;
    }
    return 0;
}