C++ 1439 뒤집기

#include <iostream>
#include <string>
#include<cmath>
#include<algorithm>
#include<stack>
#include<vector>
using namespace std;
 
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    
    string s;
 
    cin >> s;
 
    int zero = 0 , one = 0;
 
    for (int i = 0; i < s.length(); i++)
    {
        if (s[i] != s[i + 1])
        {
            if (s[i] == '0')
                zero++;
            else
                one++;
        }
    }
 
    cout << min(zero, one);
 
}
 
 

https://www.acmicpc.net/problem/1439

1439번: 뒤집기