BastanteCorriente.cc

#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define fst first
#define snd second
#define all(cont) cont.begin(), cont.end()
#define foreach(it, l) for (auto it = l.begin(); it != l.end(); it++)
#define fore(i, a, b) for (int i = a, almo5t = b; i < almo5t; ++i)
#define SZ(x) ((int)x.size())
#define EPS 1e-9
#define PI 3.1415926535897932384626433832795
#define MOD 1000000007
#define FIN                                \
    std::ios_base::sync_with_stdio(false); \
    cin.tie(NULL);                         \
    cout.tie(NULL)

typedef long long int ll;

using namespace std;

int main()
{
    FIN;
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
    stack<char> st;
    char c;
    while (cin >> c)
    {
        if (st.empty())
        {
            st.push(c);
        }
        else
        {
            if (st.top() == c)
            {
                st.pop();
            }
            else
            {
                st.push(c);
            }
        }
    }
    if (st.empty())
    {
        cout << "Yes";
    }
    else
    {
        cout << "No";
    }
    return 0;
}