Untitled

#include <bits/stdc++.h>
using namespace std;
int main()
{

    vector<int> v;
    int x;

    for (int i = 0; i < 5; i++)
    {
        cin >> x;
        v.push_back(x);
    }
    vector<int> sv;
    sv = v;
    sort(sv.begin(), sv.end());
    int count = 0;
    for (int i = 0; i < v.size(); i++)
    {
        if (v[i] != sv[i])
            count++;
    }
    if (count == 2)
        cout << "YES" << endl;
    else
        cout << "NO" << endl;
    return 0;
}