結果
問題 | No.1079 まお |
ユーザー | Sumitacchan |
提出日時 | 2020-06-12 22:47:52 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,826 ms / 2,000 ms |
コード長 | 4,060 bytes |
コンパイル時間 | 1,951 ms |
コンパイル使用メモリ | 183,504 KB |
実行使用メモリ | 30,544 KB |
最終ジャッジ日時 | 2024-06-24 05:33:15 |
合計ジャッジ時間 | 28,293 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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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
6,816 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 3 ms
6,940 KB |
testcase_05 | AC | 5 ms
6,944 KB |
testcase_06 | AC | 5 ms
6,940 KB |
testcase_07 | AC | 8 ms
6,940 KB |
testcase_08 | AC | 8 ms
6,944 KB |
testcase_09 | AC | 9 ms
6,940 KB |
testcase_10 | AC | 8 ms
6,944 KB |
testcase_11 | AC | 9 ms
6,940 KB |
testcase_12 | AC | 703 ms
16,720 KB |
testcase_13 | AC | 856 ms
19,424 KB |
testcase_14 | AC | 1,103 ms
21,968 KB |
testcase_15 | AC | 1,275 ms
24,652 KB |
testcase_16 | AC | 1,462 ms
27,324 KB |
testcase_17 | AC | 1,631 ms
25,264 KB |
testcase_18 | AC | 1,585 ms
26,752 KB |
testcase_19 | AC | 1,604 ms
24,384 KB |
testcase_20 | AC | 1,631 ms
25,068 KB |
testcase_21 | AC | 1,597 ms
25,732 KB |
testcase_22 | AC | 1,765 ms
30,420 KB |
testcase_23 | AC | 1,789 ms
30,424 KB |
testcase_24 | AC | 1,757 ms
30,420 KB |
testcase_25 | AC | 1,826 ms
30,544 KB |
testcase_26 | AC | 1,821 ms
30,424 KB |
testcase_27 | AC | 66 ms
6,940 KB |
testcase_28 | AC | 577 ms
17,900 KB |
testcase_29 | AC | 854 ms
24,300 KB |
testcase_30 | AC | 850 ms
24,176 KB |
testcase_31 | AC | 84 ms
6,940 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; struct fast_ios { fast_ios(){ cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_; #define FOR(i, begin, end) for(int i=(begin);i<(end);i++) #define REP(i, n) FOR(i,0,n) #define IFOR(i, begin, end) for(int i=(end)-1;i>=(begin);i--) #define IREP(i, n) IFOR(i,0,n) #define Sort(v) sort(v.begin(), v.end()) #define Reverse(v) reverse(v.begin(), v.end()) #define all(v) v.begin(),v.end() #define SZ(v) ((int)v.size()) #define Lower_bound(v, x) distance(v.begin(), lower_bound(v.begin(), v.end(), x)) #define Upper_bound(v, x) distance(v.begin(), upper_bound(v.begin(), v.end(), x)) #define Max(a, b) a = max(a, b) #define Min(a, b) a = min(a, b) #define bit(n) (1LL<<(n)) #define debug(x) cout << #x << "=" << x << endl; #define vdebug(v) { cout << #v << "=" << endl; REP(i_debug, v.size()){ cout << v[i_debug] << ","; } cout << endl; } #define mdebug(m) { cout << #m << "=" << endl; REP(i_debug, m.size()){ REP(j_debug, m[i_debug].size()){ cout << m[i_debug][j_debug] << ","; } cout << endl;} } #define Return(ans) { cout << (ans) << endl; return 0; } #define pb push_back #define fi first #define se second #define int long long #define INF 1000000000000000000 template<typename T> istream &operator>>(istream &is, vector<T> &v){ for (auto &x : v) is >> x; return is; } template<typename T> ostream &operator<<(ostream &os, vector<T> &v){ for(int i = 0; i < v.size(); i++) { cout << v[i]; if(i != v.size() - 1) cout << endl; }; return os; } template<typename T1, typename T2> ostream &operator<<(ostream &os, pair<T1, T2> p){ cout << '(' << p.first << ',' << p.second << ')'; return os; } template<typename T> void Out(T x) { cout << x << endl; } template<typename T1, typename T2> void Ans(bool f, T1 y, T2 n) { if(f) Out(y); else Out(n); } using vec = vector<int>; using mat = vector<vec>; using Pii = pair<int, int>; using v_bool = vector<bool>; using v_Pii = vector<Pii>; //int dx[4] = {1,0,-1,0}; //int dy[4] = {0,1,0,-1}; //char d[4] = {'D','R','U','L'}; const int mod = 1000000007; //const int mod = 998244353; int calcans(int l, int r, vec &A, int K){ if(l > r) return 0; if(l == r) return (2 * A[l] == K); int ans = 0; int c = (l + r) / 2; //[l,c]に最小値 vec v1(c - l + 1), v2(r - c); int m = INF; bool f = true; REP(i, c - l + 1){ if(A[c - i] == m) f = false; else if(A[c - i] < m){ m = A[c - i]; f = true; } if(f) v1[i] = m; else v1[i] = -1; } m = INF; map<int, int> num, len; REP(i, r - c){ Min(m, A[c + 1 + i]); v2[i] = m; num[A[c + 1 + i]] += 1; len[A[c + 1 + i]] += i + 1; } int j = r - c - 1; IREP(i, c - l + 1){ if(v1[i] == -1) continue; while(j >= 0 && v1[i] >= v2[j]){ num[A[c + 1 + j]] -= 1; len[A[c + 1 + j]] -= j + 1; j--; } ans += num[K - A[c - i]] * (i + 1) + len[K - A[c - i]]; } //(c,r]に最小値 v1 = vec(r - c), v2 = vec(c - l + 1); m = INF; f = true; REP(i, r - c){ if(A[c + 1 + i] == m) f = false; else if(A[c + 1 + i] < m){ m = A[c + 1 + i]; f = true; } if(f) v1[i] = m; else v1[i] = -1; } m = INF; num.erase(all(num)); len.erase(all(len)); REP(i, c - l + 1){ Min(m, A[c - i]); v2[i] = m; num[A[c - i]] += 1; len[A[c - i]] += i + 1; } j = c - l; IREP(i, r - c){ if(v1[i] == -1) continue; while(j >= 0 && v1[i] >= v2[j]){ num[A[c - j]] -= 1; len[A[c - j]] -= j + 1; j--; } ans += num[K - A[c + 1 + i]] * (i + 1) + len[K - A[c + 1 + i]]; } ans += calcans(l, c, A, K); ans += calcans(c + 1, r, A, K); return ans; } signed main(){ int N, K; cin >> N >> K; vec A(N); cin >> A; int ans = calcans(0, N - 1, A, K); Out(ans); return 0; }