注意会有多组输入,并输出换行!

#include <iostream>
#include <algorithm>
#include <sstream>
#include <stack>
#include <queue>
using namespace std;
int gys(int a,int b){
  if(a<b) swap(a,b);
  int r=a%b;
  while(r){
    a=b;
    b=r;
    r=a%b;
  }
  return b;
}
int main()
{
  string t;
  while(getline(cin,t)){
    if(t[0]=='['){
      int d; char c;
      stringstream ss(t);
      stack<int> s; ss>>c;
      while(ss>>d>>c) s.push(d);
      int fz=0,fm=1; //从浅入深
      while(!s.empty()){
        int p=s.top(); s.pop();
        fz+=p*fm;
        swap(fz,fm);
      }
      swap(fz,fm);
      int g=gys(fz,fm);
      fz/=g; fm/=g;
      if(fm==1) cout<<fz<<endl;
      else cout<<fz<<"/"<<fm<<endl;
    }else{
      stringstream ss(t);
      if(t.size()==1){cout<<"["<<t<<"]\n"; return 0;}
      int fz,fm; char c;
      ss>>fz>>c>>fm;
      int g=gys(fz,fm);
      fz/=g; fm/=g;
      queue<int> q;
      while(1){
        q.push(fz/fm);
        fz=fz%fm;
        if(fz==1){q.push(fm); break;}
        else if(fz==0) break;
        swap(fz,fm);
      }
      if(q.size()==1){cout<<"["<<q.front()<<"]\n"; return 0;}
      int len=q.size(); //pop时size会改变 先赋值给len
      for(int i=0;i<len;++i){
        int p=q.front(); q.pop();
        if(i==0) cout<<"["<<p<<";";
        else if(i==len-1) cout<<p<<"]\n";
        else cout<<p<<",";
      }
    }
  }
  return 0;
}

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