結果
問題 | No.2767 Add to Divide |
ユーザー | syndro_6 |
提出日時 | 2024-05-31 22:50:16 |
言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 33 ms / 2,000 ms |
コード長 | 2,542 bytes |
コンパイル時間 | 2,850 ms |
コンパイル使用メモリ | 208,552 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-12-21 00:47:34 |
合計ジャッジ時間 | 3,875 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 16 |
ソースコード
// (◕ᴗ◕✿) #include <bits/stdc++.h> #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #define rep(i, n) for (ll i = 0; i < (n); i++) #define srep(i, s, n) for (ll i = s; i < (n); i++) #define len(x) ((int)(x).size()) #define all(x) (x).begin(), (x).end() using namespace std; template<typename T> using vc = vector<T>; template<typename T> using vv = vc<vc<T>>; template<typename T> using vvv = vv<vc<T>>; using vi = vc<int>;using vvi = vv<int>; using vvvi = vv<vi>; using ll = long long;using vl = vc<ll>;using vvl = vv<ll>; using vvvl = vv<vl>; using ld = long double; using vld = vc<ld>; using vvld = vc<vld>; using vvvld = vc<vvld>; using uint = unsigned int; using ull = unsigned long long; const ld pi = acos(-1.0); const int inf = 0x3f3f3f3f; const ll INF = 0x3f3f3f3f3f3f3f3f; // const ll mod = 1000000007; const ll mod = 998244353; inline bool inside(ll y, ll x, ll H, ll W) {return 0 <= (y) and (y) < (H) and 0 <= (x) and (x) < (W); } #define debug(var) do{std::cout << #var << " : \n";view(var);}while(0) template<typename T> void view(T e){cout << e << endl;} template<typename T> void view(const vc<T>& v){for(const auto& e : v){ cout << e << " "; } cout << endl;} template<typename T> void view(const vv<T>& vv){ for(const auto& v : vv){ view(v); } } vc<pair<ll, ll>> factorization(ll &N){ vc<pair<ll, ll>> factors; ll tmp = N; for (ll i = 2; i * i <= N + 1; i++){ if (tmp % i == 0){ int cnt = 0; while (tmp % i == 0){ tmp /= i; cnt += 1; } factors.push_back({i, cnt}); } } if (tmp != 1){ factors.push_back({tmp, 1}); } if (len(factors) == 0){ factors.push_back({N, 1}); } return factors; } void solve(){ ll A, B;cin >> A >> B; ll C = B - A; if (C == 0){ cout << 0 << endl; return; } auto factor = factorization(C); ll ans = INF; function<void(int, ll)> dfs = [&](int p, ll nw){ if (len(factor) == p) return; auto [prime, num] = factor[p]; dfs(p + 1, nw); if (nw >= A) ans = min(ans, nw - A); rep(i, num){ nw *= prime; if (nw >= A){ ans = min(ans, nw - A); break; } dfs(p + 1, nw); } }; dfs(0, 1); if (ans == INF) cout << -1 << endl; else cout << ans << endl; } int main(){ int T; cin >> T; while (T--) solve(); }