結果
問題 | No.326 あみだますたー |
ユーザー | komori3 |
提出日時 | 2017-10-21 01:29:54 |
言語 | C++11 (gcc 11.4.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,861 bytes |
コンパイル時間 | 1,418 ms |
コンパイル使用メモリ | 101,984 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-11-21 10:55:18 |
合計ジャッジ時間 | 5,031 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | WA | - |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | WA | - |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 9 ms
5,248 KB |
testcase_09 | WA | - |
testcase_10 | AC | 11 ms
5,248 KB |
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 | - |
ソースコード
#define _CRT_SECURE_NO_WARNINGS #include <iostream> #include <climits> #include <cmath> #include <string> #include <vector> #include <algorithm> #include <queue> #include <map> #include <functional> #include <set> #include <numeric> #include <stack> #include <utility> #include <time.h> #include <iterator> //#include "util.h" using namespace std; typedef unsigned uint; typedef long long lint; typedef unsigned long long ulint; //呪文 template <typename _KTy, typename _Ty> ostream& operator << (ostream& ostr, const pair<_KTy, _Ty>& m) { cout << "{" << m.first << ", " << m.second << "}"; return ostr; } template <typename _KTy, typename _Ty> ostream& operator << (ostream& ostr, const map<_KTy, _Ty>& m) { if (m.empty()) { cout << "{ }"; return ostr; } cout << "{" << *m.begin(); for (auto itr = ++m.begin(); itr != m.end(); itr++) { cout << ", " << *itr; } cout << "}"; return ostr; } template <typename _Ty> ostream& operator << (ostream& ostr, const vector<_Ty>& v) { if (v.empty()) { cout << "{ }"; return ostr; } cout << "{" << v.front(); for (auto itr = ++v.begin(); itr != v.end(); itr++) { cout << ", " << *itr; } cout << "}"; return ostr; } template <typename _Ty> ostream& operator << (ostream& ostr, const set<_Ty>& s) { if (s.empty()) { cout << "{ }"; return ostr; } cout << "{" << *(s.begin()); for (auto itr = ++s.begin(); itr != s.end(); itr++) { cout << ", " << *itr; } cout << "}"; return ostr; } //template <typename T> void print(T* v, int N) { if (N == 0) cout << "{ }"; cout << "{" << v[0]; for (int i = 1; i < N; i++) cout << ", " << v[i]; cout << "}"; } #define PI 3.14159265358979323846 #define EPS 1e-8 #define FOR(i,a,b) for(int i=(a);i<(b);++i) #define REP(i,n) FOR(i,0,n) #define all(x) (x).begin(), (x).end() typedef pair<int, int> pii; vector<vector<int> > cyclic_permutation(vector<int> v, vector<int> w) { vector<vector<int> > res; vector<bool> used(v.size(), false); map<int, int> mp; for (int i = 0; i < v.size(); i++) mp[v[i]] = i; for (int i = 0; i < v.size(); i++) { int j = i; vector<int> cyclic; while (!used[j]) { used[j] = true; cyclic.push_back(j); j = w[mp[j]]; } if (cyclic.size() >= 2) res.push_back(cyclic); } return res; } vector<pii> transposition_product(vector<int> v, vector<int> w) { vector<pii> res; vector<vector<int> > cyclic = cyclic_permutation(v, w); for (int i = 0; i < cyclic.size(); i++) for (int j = 1; j < cyclic[i].size(); j++) res.push_back(pii(cyclic[i][0], cyclic[i][j])); return res; } vector<pii> fundamental_transposition_product(vector<int> v, vector<int> w) { vector<pii> res; vector<pii> transposition = transposition_product(v, w); for (int i = 0; i < transposition.size(); i++) { pii p = transposition[i]; if (p.first > p.second) swap(p.first, p.second); for (int j = p.first; j < p.second; j++) { if (!res.empty() && res.back().first == j && res.back().second == j + 1) res.pop_back(); else res.push_back(pii(j, j + 1)); } for (int j = p.second - 1; j > p.first; j--) { if (!res.empty() && res.back().first == j - 1 && res.back().second == j) res.pop_back(); else res.push_back(pii(j - 1, j)); } } return res; } int yuki0326() { int N, K; cin >> N >> K; vector<int> v(N + 1, 0); map<int, int> mp; for (int i = 1; i <= N; i++) { mp[i] = i; v[i] = i; } for (int i = 0; i < K; i++) { int X, Y; cin >> X >> Y; swap(v[mp[X]], v[mp[Y]]); swap(mp[X], mp[Y]); } vector<int> w(N + 1, 0); for (int i = 1; i <= N; i++) cin >> w[i]; vector<pii> step = fundamental_transposition_product(v, w); cout << step.size() << endl; for (int i = step.size() - 1; i >= 0; i--) cout << step[i].first << " " << step[i].second << endl; return 0; } int main() { //clock_t start, end; //start = clock(); yuki0326(); //end = clock(); //printf("%d msec.\n", end - start); return 0; }