cp/usaco/bronze/complete-search/lineup.cc
2025-04-30 16:28:40 -04:00

116 lines
2.4 KiB
C++

#include <bits/stdc++.h> // {{{
// https://codeforces.com/blog/entry/96344
#pragma GCC optimize("O2,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
using namespace std;
using i32 = int32_t;
using u32 = uint32_t;
using i64 = int64_t;
using u64 = uint64_t;
using f64 = double;
using f128 = long double;
#if __cplusplus >= 202002L
template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
template <typename T> [[nodiscard]] static T sc(auto &&x) {
return static_cast<T>(x);
}
template <typename T> [[nodiscard]] static T sz(auto &&x) {
return static_cast<T>(x.size());
}
#endif
static void NO() { std::cout << "NO\n"; }
static void YES() { std::cout << "YES\n"; }
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define ff first
#define ss second
#ifdef LOCAL
#define db(...) std::print(__VA_ARGS__)
#define dbln(...) std::println(__VA_ARGS__)
#else
#define db(...)
#define dbln(...)
#endif
// }}}
vector<string> names;
void solve() {
u32 n;
cin >> n;
vector<pair<string, string>> constraints(n);
string word, first, last;
for (u32 i = 0; i < n; ++i) {
cin >> constraints[i].ff;
for (u32 j = 0; j < 4; ++j)
cin >> word;
cin >> constraints[i].ss;
}
vector<string> ans(8, "Z");
do {
bool good = true;
for (auto &[a, b] : constraints) {
bool ok = false;
for (i32 j = 0; j < 8; ++j) {
if (names[j] == a && (j + 1 < 8 && names[j + 1] == b ||
j - 1 >= 0 && names[j - 1] == b)) {
ok = true;
break;
}
}
if (!ok) {
good = false;
break;
}
}
if (good && names < ans) {
ans = names;
}
} while (next_permutation(names.begin(), names.end()));
for (auto &e : ans)
cout << e << '\n';
}
int main() { // {{{
cin.tie(nullptr)->sync_with_stdio(false);
cin.exceptions(cin.failbit);
names = {"Bessie", "Buttercup", "Belinda", "Beatrice",
"Bella", "Blue", "Betsy", "Sue"};
sort(all(names));
#define PROBLEM_NAME "lineup"
#ifdef LOCAL
freopen("io/" PROBLEM_NAME ".in", "r", stdin);
freopen("io/" PROBLEM_NAME ".out", "w", stdout);
#else
freopen(PROBLEM_NAME ".in", "r", stdin);
freopen(PROBLEM_NAME ".out", "w", stdout);
#endif
solve();
return 0;
}
// }}}