結果
問題 | No.742 にゃんにゃんにゃん 猫の挨拶 |
ユーザー | しらっ亭 |
提出日時 | 2018-10-05 22:22:28 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 8 ms / 2,500 ms |
コード長 | 5,381 bytes |
コンパイル時間 | 1,316 ms |
コンパイル使用メモリ | 123,640 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-12 13:57:49 |
合計ジャッジ時間 | 1,926 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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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 | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 8 ms
5,248 KB |
testcase_12 | AC | 5 ms
5,248 KB |
testcase_13 | AC | 2 ms
5,248 KB |
testcase_14 | AC | 2 ms
5,248 KB |
testcase_15 | AC | 2 ms
5,248 KB |
ソースコード
#include <iostream> #include <algorithm> #include <bitset> #include <map> #include <queue> #include <set> #include <stack> #include <string> #include <utility> #include <vector> #include <array> #include <unordered_map> #include <complex> #include <deque> #include <cassert> #include <cmath> #include <functional> #include <iomanip> #include <chrono> #include <random> #include <numeric> using namespace std; #define forr(x,arr) for(auto&& x:arr) #define _overload3(_1,_2,_3,name,...) name #define _rep2(i,n) _rep3(i,0,n) #define _rep3(i,a,b) for(int i=int(a);i<int(b);++i) #define rep(...) _overload3(__VA_ARGS__,_rep3,_rep2,)(__VA_ARGS__) #define _rrep2(i,n) _rrep3(i,0,n) #define _rrep3(i,a,b) for(int i=int(b)-1;i>=int(a);i--) #define rrep(...) _overload3(__VA_ARGS__,_rrep3,_rrep2,)(__VA_ARGS__) #define all(x) (x).begin(),(x).end() #define bit(n) (1LL<<(n)) #define sz(x) ((int)(x).size()) #define TEN(n) ((ll)(1e##n)) #define fst first #define snd second string DBG_DLM(int &i){return(i++==0?"":", ");} #define DBG_B(exp){int i=0;os<<"{";{exp;}os<<"}";return os;} template<class T>ostream&operator<<(ostream&os,vector<T>v); template<class T>ostream&operator<<(ostream&os,set<T>v); template<class T>ostream&operator<<(ostream&os,queue<T>q); template<class T>ostream&operator<<(ostream&os,priority_queue<T>q); template<class T,class K>ostream&operator<<(ostream&os,pair<T,K>p); template<class T,class K>ostream&operator<<(ostream&os,map<T,K>mp); template<class T,class K>ostream&operator<<(ostream&os,unordered_map<T,K>mp); template<int I,class TPL>void DBG(ostream&os,TPL t){} template<int I,class TPL,class H,class...Ts>void DBG(ostream&os,TPL t){os<<(I==0?"":", ")<<get<I>(t);DBG<I+1,TPL,Ts...>(os,t);} template<class T,class K>void DBG(ostream&os,pair<T,K>p,string delim){os<<"("<<p.first<<delim<<p.second<<")";} template<class...Ts>ostream&operator<<(ostream&os,tuple<Ts...>t){os<<"(";DBG<0,tuple<Ts...>,Ts...>(os,t);os<<")";return os;} template<class T,class K>ostream&operator<<(ostream&os,pair<T,K>p){DBG(os,p,", ");return os;} template<class T>ostream&operator<<(ostream&os,vector<T>v){DBG_B(forr(t,v){os<<DBG_DLM(i)<<t;});} template<class T>ostream&operator<<(ostream&os,set<T>s){DBG_B(forr(t,s){os<<DBG_DLM(i)<<t;});} template<class T>ostream&operator<<(ostream&os,queue<T>q){DBG_B(for(;q.size();q.pop()){os<<DBG_DLM(i)<<q.front();});} template<class T>ostream&operator<<(ostream&os,priority_queue<T>q){DBG_B(for(;q.size();q.pop()){os<<DBG_DLM(i)<<q.top();});} template<class T,class K>ostream&operator<<(ostream&os,map<T,K>m){DBG_B(forr(p,m){os<<DBG_DLM(i);DBG(os,p,"->");});} template<class T,class K>ostream&operator<<(ostream&os,unordered_map<T,K>m){DBG_B(forr(p,m){os<<DBG_DLM(i);DBG(os,p,"->");});} #define DBG_OVERLOAD(_1,_2,_3,_4,_5,_6,macro_name,...)macro_name #define DBG_LINE(){char s[99];sprintf(s,"line:%3d | ",__LINE__);cerr<<s;} #define DBG_OUTPUT(v){cerr<<(#v)<<"="<<(v);} #define DBG1(v,...){DBG_OUTPUT(v);} #define DBG2(v,...){DBG_OUTPUT(v);cerr<<", ";DBG1(__VA_ARGS__);} #define DBG3(v,...){DBG_OUTPUT(v);cerr<<", ";DBG2(__VA_ARGS__);} #define DBG4(v,...){DBG_OUTPUT(v);cerr<<", ";DBG3(__VA_ARGS__);} #define DBG5(v,...){DBG_OUTPUT(v);cerr<<", ";DBG4(__VA_ARGS__);} #define DBG6(v,...){DBG_OUTPUT(v);cerr<<", ";DBG5(__VA_ARGS__);} #define DEBUG0(){DBG_LINE();cerr<<endl;} #ifdef LOCAL #define out(...){DBG_LINE();DBG_OVERLOAD(__VA_ARGS__,DBG6,DBG5,DBG4,DBG3,DBG2,DBG1)(__VA_ARGS__);cerr<<endl;} #else #define out(...) #endif using ll=long long; using pii=pair<int,int>;using pll=pair<ll,ll>;using pil=pair<int,ll>;using pli=pair<ll,int>; using vs=vector<string>;using vvs=vector<vs>;using vvvs=vector<vvs>; using vb=vector<bool>;using vvb=vector<vb>;using vvvb=vector<vvb>; using vi=vector<int>;using vvi=vector<vi>;using vvvi=vector<vvi>; using vl=vector<ll>;using vvl=vector<vl>;using vvvl=vector<vvl>; using vd=vector<double>;using vvd=vector<vd>;using vvvd=vector<vvd>; using vpii=vector<pii>;using vvpii=vector<vpii>;using vvvpii=vector<vvpii>; template<class A,class B>bool amax(A&a,const B&b){return b>a?a=b,1:0;} template<class A,class B>bool amin(A&a,const B&b){return b<a?a=b,1:0;} template<class T>void print(T t){cout<<t<<"\n";} template<class H,class... T>void print(H h,T... t){cout<<h<<" ";print(t...);} ll ri(){ll l;cin>>l;return l;} string rs(){string s;cin>>s;return s;} template <typename T> struct BinaryIndexedTree0 { const int N; vector<T> val; BinaryIndexedTree0(int N) : N(N), val(N) {} T sum(int i) const { T s = 0; --i; if (i >= N) i = N - 1; for (; i >= 0; i = (i & (i + 1)) - 1) s += val[i]; return s; } T sum(int l, int r) const { return sum(r) - sum(l); } void add(int i, T x) { for (; i < N; i |= i + 1) val[i] += x; } void set(int i, T x) { T c = sum(i, i + 1); add(i, x - c); } int lower_bound(T w) const { int x = 0; for (int k = (1 << (31 - __builtin_clz(N))) - 1; ; k >>= 1) { if (x + k < N && val[x + k] < w) { w -= val[x + k]; x += k + 1; } if (k == 0) break; } return x; } }; void Main() { int n = ri(); vector<pii> A(n); rep(i, n) A[i].fst = ri()-1, A[i].snd = i; sort(all(A), greater<decltype(A)::value_type>()); BinaryIndexedTree0<int> seg(n); ll ans = 0; rep(i, n) { ans += seg.sum(A[i].snd); seg.add(A[i].snd, 1); } print(ans); } signed main() { cin.tie(nullptr); ios::sync_with_stdio(false); Main(); return 0; }