結果
問題 | No.2501 Maximum Inversion Number |
ユーザー | torisasami4 |
提出日時 | 2023-09-06 21:40:34 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 120 ms / 2,000 ms |
コード長 | 7,083 bytes |
コンパイル時間 | 2,833 ms |
コンパイル使用メモリ | 235,944 KB |
実行使用メモリ | 10,652 KB |
最終ジャッジ日時 | 2024-09-15 13:57:11 |
合計ジャッジ時間 | 4,795 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge6 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 59 ms
5,376 KB |
testcase_02 | AC | 74 ms
5,376 KB |
testcase_03 | AC | 74 ms
5,376 KB |
testcase_04 | AC | 73 ms
10,528 KB |
testcase_05 | AC | 76 ms
10,528 KB |
testcase_06 | AC | 78 ms
10,652 KB |
testcase_07 | AC | 60 ms
5,736 KB |
testcase_08 | AC | 75 ms
6,072 KB |
testcase_09 | AC | 26 ms
5,376 KB |
testcase_10 | AC | 61 ms
5,376 KB |
testcase_11 | AC | 56 ms
6,108 KB |
testcase_12 | AC | 56 ms
6,236 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 80 ms
10,524 KB |
testcase_15 | AC | 51 ms
5,376 KB |
testcase_16 | AC | 120 ms
5,376 KB |
ソースコード
// #define _GLIBCXX_DEBUG #pragma GCC optimize("O2,no-stack-protector,unroll-loops,fast-math") #include <bits/stdc++.h> using namespace std; #define rep(i, n) for (int i = 0; i < int(n); i++) #define per(i, n) for (int i = (n)-1; 0 <= i; i--) #define rep2(i, l, r) for (int i = (l); i < int(r); i++) #define per2(i, l, r) for (int i = (r)-1; int(l) <= i; i--) #define each(e, v) for (auto& e : v) #define MM << " " << #define pb push_back #define eb emplace_back #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) #define sz(x) (int)x.size() template <typename T> void print(const vector<T>& v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' '); if (v.empty()) cout << '\n'; } using ll = long long; using pii = pair<int, int>; using pll = pair<ll, ll>; template <typename T> bool chmax(T& x, const T& y) { return (x < y) ? (x = y, true) : false; } template <typename T> bool chmin(T& x, const T& y) { return (x > y) ? (x = y, true) : false; } template <class T> using minheap = std::priority_queue<T, std::vector<T>, std::greater<T>>; template <class T> using maxheap = std::priority_queue<T>; template <typename T> int lb(const vector<T>& v, T x) { return lower_bound(begin(v), end(v), x) - begin(v); } template <typename T> int ub(const vector<T>& v, T x) { return upper_bound(begin(v), end(v), x) - begin(v); } template <typename T> void rearrange(vector<T>& v) { sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); } // __int128_t gcd(__int128_t a, __int128_t b) { // if (a == 0) // return b; // if (b == 0) // return a; // __int128_t cnt = a % b; // while (cnt != 0) { // a = b; // b = cnt; // cnt = a % b; // } // return b; // } long long extGCD(long long a, long long b, long long& x, long long& y) { if (b == 0) { x = 1; y = 0; return a; } long long d = extGCD(b, a % b, y, x); y -= a / b * x; return d; } struct Union_Find_Tree { vector<int> data; const int n; int cnt; Union_Find_Tree(int n) : data(n, -1), n(n), cnt(n) {} int root(int x) { if (data[x] < 0) return x; return data[x] = root(data[x]); } int operator[](int i) { return root(i); } bool unite(int x, int y) { x = root(x), y = root(y); if (x == y) return false; if (data[x] > data[y]) swap(x, y); data[x] += data[y], data[y] = x; cnt--; return true; } int size(int x) { return -data[root(x)]; } int count() { return cnt; }; bool same(int x, int y) { return root(x) == root(y); } void clear() { cnt = n; fill(begin(data), end(data), -1); } }; template <int mod> struct Mod_Int { int x; Mod_Int() : x(0) {} Mod_Int(long long y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} static int get_mod() { return mod; } Mod_Int& operator+=(const Mod_Int& p) { if ((x += p.x) >= mod) x -= mod; return *this; } Mod_Int& operator-=(const Mod_Int& p) { if ((x += mod - p.x) >= mod) x -= mod; return *this; } Mod_Int& operator*=(const Mod_Int& p) { x = (int)(1LL * x * p.x % mod); return *this; } Mod_Int& operator/=(const Mod_Int& p) { *this *= p.inverse(); return *this; } Mod_Int& operator++() { return *this += Mod_Int(1); } Mod_Int operator++(int) { Mod_Int tmp = *this; ++*this; return tmp; } Mod_Int& operator--() { return *this -= Mod_Int(1); } Mod_Int operator--(int) { Mod_Int tmp = *this; --*this; return tmp; } Mod_Int operator-() const { return Mod_Int(-x); } Mod_Int operator+(const Mod_Int& p) const { return Mod_Int(*this) += p; } Mod_Int operator-(const Mod_Int& p) const { return Mod_Int(*this) -= p; } Mod_Int operator*(const Mod_Int& p) const { return Mod_Int(*this) *= p; } Mod_Int operator/(const Mod_Int& p) const { return Mod_Int(*this) /= p; } bool operator==(const Mod_Int& p) const { return x == p.x; } bool operator!=(const Mod_Int& p) const { return x != p.x; } Mod_Int inverse() const { assert(*this != Mod_Int(0)); return pow(mod - 2); } Mod_Int pow(long long k) const { Mod_Int now = *this, ret = 1; for (; k > 0; k >>= 1, now *= now) { if (k & 1) ret *= now; } return ret; } friend ostream& operator<<(ostream& os, const Mod_Int& p) { return os << p.x; } friend istream& operator>>(istream& is, Mod_Int& p) { long long a; is >> a; p = Mod_Int<mod>(a); return is; } }; ll mpow2(ll x, ll n, ll mod) { ll ans = 1; x %= mod; while (n != 0) { if (n & 1) ans = ans * x % mod; x = x * x % mod; n = n >> 1; } ans %= mod; return ans; } template <typename T> T modinv(T a, const T& m) { T b = m, u = 1, v = 0; while (b > 0) { T t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return u >= 0 ? u % m : (m - (-u) % m) % m; } ll divide_int(ll a, ll b) { if (b < 0) a = -a, b = -b; return (a >= 0 ? a / b : (a - b + 1) / b); } // const int MOD = 1000000007; const int MOD = 998244353; using mint = Mod_Int<MOD>; mint mpow(mint x, ll n) { bool rev = n < 0; n = abs(n); mint ans = 1; while (n != 0) { if (n & 1) ans *= x; x *= x; n = n >> 1; } return (rev ? ans.inverse() : ans); } // ----- library ------- // ----- library ------- int main() { ios::sync_with_stdio(false); std::cin.tie(nullptr); cout << fixed << setprecision(15); int T; cin >> T; while (T--) { ll n, m; cin >> n >> m; vector<ll> l(n), r(n); rep(i, n) cin >> l[i]; rep(i, n) cin >> r[i]; if (m < accumulate(all(l), 0ll) || accumulate(all(r), 0ll) < m) { cout << -1 << '\n'; continue; } sort(all(l)), sort(all(r)); vector<ll> v; rep(i, n) v.eb(l[i]), v.eb(r[i]); sort(all(v)); auto c2 = [&](ll x) {return x * (x - 1) / 2;}; int il = 0, ir = 0; ll cnt = 0, ans = c2(m); rep(i, n) ans -= c2(l[i]), m -= l[i]; rep(i, n * 2) { if (cnt) { if ((v[i] - v[i - 1]) * cnt > m) { ll d = m / cnt, rem = m % cnt; ans -= (c2(v[i - 1] + d) - c2(v[i - 1])) * cnt; ans -= (c2(v[i - 1] + d + 1) - c2(v[i - 1] + d)) * rem; break; } else ans -= (c2(v[i]) - c2(v[i - 1])) * cnt, m -= (v[i] - v[i - 1]) * cnt; } while (il < n && l[il] <= v[i]) cnt++, il++; while (ir < n && r[ir] <= v[i]) cnt--, ir++; } cout << ans << '\n'; } }