結果
問題 | No.270 next_permutation (1) |
ユーザー |
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提出日時 | 2015-06-28 18:07:16 |
言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
結果 |
AC
|
実行時間 | 15 ms / 2,000 ms |
コード長 | 2,961 bytes |
コンパイル時間 | 845 ms |
コンパイル使用メモリ | 89,856 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-12-18 02:03:19 |
合計ジャッジ時間 | 2,058 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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ファイルパターン | 結果 |
---|---|
other | AC * 15 |
ソースコード
#include <string>#include <vector>#include <algorithm>#include <numeric>#include <set>#include <map>#include <queue>#include <iostream>#include <sstream>#include <cstdio>#include <cmath>#include <ctime>#include <cstring>#include <cctype>#include <cassert>#include <limits>#include <functional>#define rep(i,n) for(int (i)=0;(i)<(int)(n);++(i))#define rer(i,l,u) for(int (i)=(int)(l);(i)<=(int)(u);++(i))#define reu(i,l,u) for(int (i)=(int)(l);(i)<(int)(u);++(i))#if defined(_MSC_VER) || __cplusplus > 199711L#define aut(r,v) auto r = (v)#else#define aut(r,v) __typeof(v) r = (v)#endif#define each(it,o) for(aut(it, (o).begin()); it != (o).end(); ++ it)#define all(o) (o).begin(), (o).end()#define pb(x) push_back(x)#define mp(x,y) make_pair((x),(y))#define mset(m,v) memset(m,v,sizeof(m))#define INF 0x3f3f3f3f#define INFL 0x3f3f3f3f3f3f3f3fLLusing namespace std;typedef vector<int> vi; typedef pair<int,int> pii; typedef vector<pair<int,int> > vpii; typedef long long ll;template<typename T, typename U> inline void amin(T &x, U y) { if(y < x) x = y; }template<typename T, typename U> inline void amax(T &x, U y) { if(x < y) x = y; }#ifdef NDEBUG#error assert is disabled!#endifint readNatural(int lo, int up) {assert(0 <= lo && lo <= up);int x = 0;while(1) {int d = getchar();if(!('0' <= d && d <= '9')) {ungetc(d, stdin);break;}d -= '0';assert(d <= up && x <= (up - d) / 10);x = x * 10 + d;}assert(lo <= x && x <= up);return x;}void readSpace() { int c = getchar(); assert(c == ' '); }static bool read_eof = false;void readEOL() {int c = getchar();if(c == EOF) {assert(!read_eof);read_eof = true;}else {assert(c == '\n');}}bool my_next_permutation(const vector<int> &p, vector<pair<int,int> > &swaps) {swaps.clear();int n = p.size();if(n == 0) return false;int k = n - 2;for(; k >= 0 && p[k] >= p[k+1]; -- k) ;if(k >= 0) {int l = n - 1;for(; p[k] >= p[l]; -- l) ;swaps.push_back(make_pair(k, l));}for(int i = k + 1, j = n - 1; i < j; ++ i, -- j)swaps.push_back(make_pair(i, j));return k >= 0;}int main() {int N, K;N = readNatural(1, 100000);readSpace();K = readNatural(0, 100000);readEOL();vector<int> p(N);rep(i, N) {p[i] = readNatural(1, N);if(i < N-1) readSpace(); else readEOL();}{ vector<bool> vis(N);rep(i, N) {assert(!vis[p[i]-1]);vis[p[i]-1] = true;}}vector<int> B(N);rep(i, N) {B[i] = readNatural(1, (int)1e8);if(i < N-1) readSpace(); else readEOL();}assert(!read_eof);long long dist = 0;rep(i, N)dist += abs(p[i] - B[i]);long long sum = 0;vpii swaps;rep(i, K) {sum += dist;my_next_permutation(p, swaps);each(j, swaps) {int a = j->first, b = j->second;dist -= abs(p[a] - B[a]);dist -= abs(p[b] - B[b]);swap(p[a], p[b]);dist += abs(p[a] - B[a]);dist += abs(p[b] - B[b]);}}cout << sum << endl;return 0;}