#include<bits/stdc++.h>
using namespace std;
//头尾不可以有切分字符
vector<string> spilt(string s,char ch)
{
    s.push_back(ch);
    int start = 0,end = 0,size = s.size();
    vector<string> vs;
    
    for(int i = 0;i < size;i++)
    {
        if(s[i]==ch)
        {
            end = i;
            string temp = s.substr(start,end-start);
            start = i+1;
            vs.push_back(temp);
        }
    }
    return vs;
}
int main()
{
    string s = "12/34/56/78/9";
    vector<string> v = spilt(s,'/');
    cout << v.size() << endl;
    for(int i = 0;i < v.size();i++)
    {
        cout << v[i] << endl;
    }
}