#include <iostream> #include <string> #include <vector> using namespace std;  int main() {   vector<string> ss;   string s;   while(cin>>s)     ss.push_back(s);    for(int i=0;i<ss.size();i++)   {     for(int j=0;j<ss[i].size();j++)//ss[1].size=wang.size       if(islower(ss[i][j]))//單詞中下標為j的字符為小寫字母         ss[i][j]=toupper(ss[i][j]);     cout<<ss[i]<<" ";     if((i+1)%3==0)//每3個單詞為一行輸出       cout<<endl;   }   return 0; }