結果
問題 | No.1300 Sum of Inversions |
ユーザー | T1610 |
提出日時 | 2020-11-30 15:04:36 |
言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,369 bytes |
コンパイル時間 | 2,716 ms |
コンパイル使用メモリ | 226,840 KB |
実行使用メモリ | 102,588 KB |
最終ジャッジ日時 | 2024-09-13 02:22:05 |
合計ジャッジ時間 | 36,631 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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
6,812 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | AC | 143 ms
6,944 KB |
testcase_34 | AC | 200 ms
6,940 KB |
testcase_35 | WA | - |
testcase_36 | WA | - |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i,n) REP(i,0,n) #define REP(i,s,e) for(int i=(s); i<(int)(e); i++) #define repr(i, n) REPR(i, n, 0) #define REPR(i, s, e) for(int i=(int)(s-1); i>=(int)(e); i--) #define all(r) r.begin(),r.end() #define rall(r) r.rbegin(),r.rend() typedef long long ll; typedef vector<int> vi; typedef vector<ll> vl; const ll INF = 1e18; const ll MOD = 1e9 + 7; template<typename T> T chmax(T& a, const T& b){return a = (a > b ? a : b);} template<typename T> T chmin(T& a, const T& b){return a = (a < b ? a : b);} template<typename T> tuple<map<T, int>, vector<T>> zaatu(const vector<vector<T>>& v) { map<T, int> mp; for(auto&& u: v) for(auto&& x: u) mp[x] = 0; vector<T> r; for(auto& p: mp) { p.second = r.size(); r.emplace_back(p.first); } return {mp, r}; } template <typename T, typename U> T pow_fast(T x, U n) { T ret = (T)1; while(n) { if(n & (U)1) ret *= x; x *= x; n >>= 1; } return ret; } template <typename ModType, ModType MOD> struct ModInt { ModType val; ModInt() : val(0) {} ModInt(ModType x) : val(x % MOD) { if(val < 0) val += MOD; }; operator ModType() const { return val; } ModInt &operator+=(const ModInt &m) { val += m.val; if(val >= MOD) val -= MOD; return *this; } ModInt &operator-=(const ModInt &m) { val -= m.val; if(val < 0) val += MOD; return *this; } ModInt &operator*=(const ModInt &m) { (val *= m.val) %= MOD; return *this; } ModInt &operator/=(const ModInt &m) { *this *= m.inverse(); return *this; } ModInt operator+(const ModInt &m) const { return ModInt(*this) += m; } ModInt operator-(const ModInt &m) const { return ModInt(*this) -= m; } ModInt operator*(const ModInt &m) const { return ModInt(*this) *= m; } ModInt operator/(const ModInt &m) const { return ModInt(*this) /= m; } ModInt inverse() const { return pow_fast(*this, MOD - 2); } ModInt pow(ModType n) const {return pow_fast(*this, n); } friend std::ostream &operator<<(std::ostream &os, const ModInt &rhs) { os << rhs.val; return os; } friend std::istream &operator>>(std::istream &is, ModInt &rhs) { ModType value; is >> value; rhs = ModInt(value); return is; } }; using mint = ModInt<ll, 998244353LL>; using ull = unsigned long long; template <typename T> struct Node { static inline const T initVal = 0; //TODO: fix type and value static inline const T initLazy = 0; //TODO: fix type and value T val; T lazy; ull l, r; Node<T>* l_node = nullptr; Node<T>* r_node = nullptr; Node(ull l, ull r, const T& val = initVal) : l(l), r(r), val(val), lazy(initLazy) {} T getVal() { return val + lazy * T(r - l); //TODO: fix } T f1(const T& a, const T& b) { return a+b; //TODO: fix } T f2(const T& a, const T& b) { return a+b; //TODO: fix } void push() { if(r - l > 1) { auto m = (l+r)/2; { if(l_node == nullptr) l_node = new Node(l, m); if(lazy != initLazy) l_node->lazy = f2(l_node->lazy, this->lazy); } { if(r_node == nullptr) r_node = new Node(m, r); if(lazy != initLazy) r_node->lazy = f2(r_node->lazy, this->lazy); } } val = getVal(); lazy = initLazy; } void fix() { if(r - l == 1) return; val = f1(l_node->getVal(), r_node->getVal()); } T query(ull qL, ull qR) { if(qR <= l || r <= qL) return initVal; if(qL <= l && r <= qR) return getVal(); if(r - l == 1) return getVal(); push(); T l_val = l_node->query(qL, qR), r_val = r_node->query(qL, qR); return f1(l_val, r_val); } void update(ull uL, ull uR, const T& uVal) { if(uR <= l || r <= uL) return; if(uL <= l && r <= uR) lazy = f2(lazy, uVal); else { push(); l_node->update(uL, uR, uVal); r_node->update(uL, uR, uVal); fix(); } } }; template <typename T> struct DynamicLazySegTree { Node<T> root; DynamicLazySegTree(ull l, ull r, const T& val) : root(l, r, val) {} DynamicLazySegTree(ull r): root(0, r, Node<T>::initVal) {} T query(ull l, ull r) { return root.query(l, r); } void update(ull l, ull r, const T& val) { root.update(l, r, val); } }; int main(){ int n; cin >> n; vi a(n); rep(i, n) cin >> a[i]; vector<vi> aa(1, a); auto [mp, v] = zaatu(aa); DynamicLazySegTree<mint> seg1(n+10), seg2(n+10); DynamicLazySegTree<int> cnt1(n+10), cnt2(n+10); mint ans = 0; repr(i, n) { int cur = mp[a[i]]; seg1.update(cur, cur+1, a[i]); cnt1.update(cur, cur+1, 1); if(cur > 0) { seg2.update(cur, cur+1, seg1.query(0, cur)+mint(cnt1.query(0, cur)*a[i])); cnt2.update(cur, cur+1, cnt1.query(0, cur)); } if(cur > 0) { ans += seg2.query(0, cur) + mint(cnt2.query(0, cur) * a[i]); } } cout << ans << '\n'; return 0; }