7-142 4203 IBM减一

#include <algorithm>
#include <cstdint>
#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();
}

char single_encrypt(char x)
{
    if (std::isupper(x))
        return (x - 'A' + 1) % 26 + 'A';
    return x;
}

std::string encrypt(const std::string &str)
{
    std::string res;
    for (auto &item : str)
    {
        res += single_encrypt(item);
    }
    return res;
}

void solve()
{
    i32 t;
    std::cin >> t;
    for (i32 i = 1; i <= t; ++i)
    {
        std::cout << "String #" << i << '\n';
        std::string str;
        std::cin >> str;
        std::cout << encrypt(str) << "\n\n";
    }
}