結果
問題 | No.1371 交換門松列・松 |
ユーザー | yuto1115 |
提出日時 | 2021-01-29 22:34:04 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 50 ms / 4,000 ms |
コード長 | 4,790 bytes |
コンパイル時間 | 2,351 ms |
コンパイル使用メモリ | 212,612 KB |
実行使用メモリ | 7,408 KB |
最終ジャッジ日時 | 2024-06-27 08:52:05 |
合計ジャッジ時間 | 4,287 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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
6,940 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,948 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 2 ms
6,940 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,944 KB |
testcase_10 | AC | 2 ms
6,944 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 2 ms
6,944 KB |
testcase_13 | AC | 2 ms
6,940 KB |
testcase_14 | AC | 2 ms
6,940 KB |
testcase_15 | AC | 2 ms
6,944 KB |
testcase_16 | AC | 2 ms
6,940 KB |
testcase_17 | AC | 2 ms
6,944 KB |
testcase_18 | AC | 30 ms
7,280 KB |
testcase_19 | AC | 30 ms
7,256 KB |
testcase_20 | AC | 30 ms
7,408 KB |
testcase_21 | AC | 31 ms
7,280 KB |
testcase_22 | AC | 31 ms
7,404 KB |
testcase_23 | AC | 49 ms
7,408 KB |
testcase_24 | AC | 48 ms
7,276 KB |
testcase_25 | AC | 48 ms
7,404 KB |
testcase_26 | AC | 49 ms
7,408 KB |
testcase_27 | AC | 49 ms
7,280 KB |
testcase_28 | AC | 48 ms
7,280 KB |
testcase_29 | AC | 48 ms
7,280 KB |
testcase_30 | AC | 48 ms
7,284 KB |
testcase_31 | AC | 50 ms
7,408 KB |
ソースコード
//@formatter:off #include<bits/stdc++.h> #define overload4(_1,_2,_3,_4,name,...) name #define rep1(i,n) for (ll i = 0; i < ll(n); ++i) #define rep2(i,s,n) for (ll i = ll(s); i < ll(n); ++i) #define rep3(i,s,n,d) for(ll i = ll(s); i < ll(n); i+=d) #define rep(...) overload4(__VA_ARGS__,rep3,rep2,rep1)(__VA_ARGS__) #define rrep(i,n) for (ll i = ll(n)-1; i >= 0; i--) #define all(a) a.begin(),a.end() #define rall(a) a.rbegin(),a.rend() #define popcount(x) __builtin_popcount(x) #define pb push_back #define eb emplace_back #ifdef __LOCAL #define debug(...) { cout << #__VA_ARGS__; cout << ": "; print(__VA_ARGS__); cout << flush; } #else #define debug(...) void(0) #endif #define INT(...) int __VA_ARGS__;scan(__VA_ARGS__) #define LL(...) ll __VA_ARGS__;scan(__VA_ARGS__) #define STR(...) string __VA_ARGS__;scan(__VA_ARGS__) #define CHR(...) char __VA_ARGS__;scan(__VA_ARGS__) #define DBL(...) double __VA_ARGS__;scan(__VA_ARGS__) #define LD(...) ld __VA_ARGS__;scan(__VA_ARGS__) using namespace std; using ll = long long; using ld = long double; using P = pair<int,int>; using LP = pair<ll,ll>; using vi = vector<int>; using vvi = vector<vector<int>>; using vl = vector<ll>; using vvl = vector<vector<ll>>; using vd = vector<double>; using vvd = vector<vector<double>>; using vs = vector<string>; using vc = vector<char>; using vvc = vector<vector<char>>; using vb = vector<bool>; using vvb = vector<vector<bool>>; using vp = vector<P>; using vvp = vector<vector<P>>; template<class S,class T> istream& operator>>(istream &is,pair<S,T> &p) { return is >> p.first >> p.second; } template<class S,class T> ostream& operator<<(ostream &os,const pair<S,T> &p) { return os<<'{'<<p.first<<","<<p.second<<'}'; } template<class T> istream& operator>>(istream &is,vector<T> &v) { for(T &t:v){is>>t;} return is; } template<class T> ostream& operator<<(ostream &os,const vector<T> &v) { os<<'[';rep(i,v.size())os<<v[i]<<(i==int(v.size()-1)?"":","); return os<<']'; } template<class T> bool chmin(T& a,T b) {if(a > b){a = b; return true;} return false;} template<class T> bool chmax(T& a,T b) {if(a < b){a = b; return true;} return false;} void scan(){} template <class Head, class... Tail> void scan(Head& head, Tail&... tail){ cin >> head; scan(tail...); } template<class T> void print(const T& t){ cout << t << '\n'; } template <class Head, class... Tail> void print(const Head& head, const Tail&... tail){ cout<<head<<' '; print(tail...); } template<class... T> void fin(const T&... a) { print(a...); exit(0); } const string yes[] = {"no","yes"}; const string Yes[] = {"No","Yes"}; const string YES[] = {"NO","YES"}; const int inf = 1001001001; const ll linf = 1001001001001001001; //@formatter:on template<typename T> class BIT { int n; vector<T> val; public: BIT(int n) : n(n), val(n + 1, 0) {} void add(int i, T x = 1) { i++; while (i <= n) { val[i] += x; i += i & -i; } } T sum(int i) { T ret = 0; i++; while (i > 0) { ret += val[i]; i -= i & -i; } return ret; } // [l,r) T sum(int l, int r) { return sum(r - 1) - sum(l - 1); } }; int main() { ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); INT(n); vi a(n); cin >> a; rep(i, n) a[i]--; if (a[0] > a[1]) { rep(i, n) a[i] = n - 1 - a[i]; } ll ans = 0; { vi sum(n + 1); rep(i, 0, n, 2) sum[a[i] + 1]++; rep(i, n) sum[i + 1] += sum[i]; rep(i, 0, n, 2) { int mn = inf; if (i > 0) chmin(mn, a[i - 1]); if (i < n - 1) chmin(mn, a[i + 1]); ans += sum[mn] - sum[a[i] + 1]; } } { vi sum(n + 1); rep(i, 1, n, 2) sum[a[i] + 1]++; rep(i, n) sum[i + 1] += sum[i]; rep(i, 1, n, 2) { int mx = -1; if (i > 0) chmax(mx, a[i - 1]); if (i < n - 1) chmax(mx, a[i + 1]); ans += sum[a[i]] - sum[mx + 1]; } } { BIT<int> bt(n); vp ls; rep(i, 0, n, 2) { int mn = inf; if (i > 0) chmin(mn, a[i - 1]); if (i < n - 1) chmin(mn, a[i + 1]); ls.eb(mn, a[i]); } sort(all(ls)); auto it = ls.begin(); vp add; rep(i, 1, n, 2) { int mx = -1; if (i > 0) chmax(mx, a[i - 1]); if (i < n - 1) chmax(mx, a[i + 1]); add.eb(a[i], mx); } sort(all(add)); for (auto[f, s] : add) { while (it != ls.end() and it->first <= f) { ans += bt.sum(it->second - 1); it++; } bt.add(s); } } print(ans); }