7-86 1026 数字加密

#include <algorithm>
#include <cmath>
#include <cstdint>
#include <iomanip>
#include <iostream>
#include <limits>
#include <numeric>
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>

using i32 = std::int32_t;
using i64 = std::int64_t;
using u32 = std::uint32_t;
using u64 = std::uint64_t;
using pii = std::pair<i32, i32>;
using pll = std::pair<i64, i64>;
using vi = std::vector<i32>;
using vll = std::vector<i64>;
using vpii = std::vector<pii>;
using vpll = std::vector<pll>;

void solve();

int main()
{
    std::cin.tie(nullptr)->sync_with_stdio(false);
    solve();
}

std::string get_number_output(i32 n)
{
    if (n < 0)
    {
        return "(" + std::to_string(n) + ")";
    }
    return std::to_string(n);
}

void solve()
{
    std::string s;
    while (std::cin >> s)
    {
        for (auto &item : s)
        {
            i32 num = item - '0';
            num += 9;
            num %= 10;
            item = num + '0';
        }
        std::swap(s[0], s[2]);
        std::swap(s[1], s[3]);
        std::cout << std::stoi(s) << std::endl;
    }
}