結果
問題 | No.90 品物の並び替え |
ユーザー |
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提出日時 | 2017-02-14 04:55:20 |
言語 | C++11 (gcc 13.3.0) |
結果 |
AC
|
実行時間 | 16 ms / 5,000 ms |
コード長 | 3,692 bytes |
コンパイル時間 | 1,807 ms |
コンパイル使用メモリ | 159,356 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-12-29 21:01:00 |
合計ジャッジ時間 | 1,954 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 9 |
ソースコード
#include <bits/stdc++.h>using namespace std;typedef long long signed int LL;typedef long long unsigned int LU;#define incID(i, l, r) for(int i = (l) ; i < (r); i++)#define incII(i, l, r) for(int i = (l) ; i <= (r); i++)#define decID(i, l, r) for(int i = (r) - 1; i >= (l); i--)#define decII(i, l, r) for(int i = (r) ; i >= (l); i--)#define inc(i, n) incID(i, 0, n)#define inc1(i, n) incII(i, 1, n)#define dec(i, n) decID(i, 0, n)#define dec1(i, n) decII(i, 1, n)#define inII(v, l, r) ((l) <= (v) && (v) <= (r))#define inID(v, l, r) ((l) <= (v) && (v) < (r))#define PB push_back#define EB emplace_back#define MP make_pair#define FI first#define SE second#define UB upper_bound#define LB lower_bound#define PQ priority_queue#define ALL(v) v.begin(), v.end()#define RALL(v) v.rbegin(), v.rend()#define FOR(it, v) for(auto it = v.begin(); it != v.end(); ++it)#define RFOR(it, v) for(auto it = v.rbegin(); it != v.rend(); ++it)template<typename T> bool setmin(T & a, T b) { if(b < a) { a = b; return true; } else { return false; } }template<typename T> bool setmax(T & a, T b) { if(b > a) { a = b; return true; } else { return false; } }template<typename T> bool setmineq(T & a, T b) { if(b <= a) { a = b; return true; } else { return false; } }template<typename T> bool setmaxeq(T & a, T b) { if(b >= a) { a = b; return true; } else { return false; } }template<typename T> T gcd(T a, T b) { return (b == 0 ? a : gcd(b, a % b)); }template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; }// ---- ----typedef long long unsigned int LLUI;class Permutation {public:Permutation(int size);LLUI get_counter();int get_at(int n);void set_permutation(LLUI n);bool next_permutation();bool previous_permutation();private:int size;int a[20];LLUI counter;LLUI frac(LLUI n) {if(n == 0) { return 1; }return n * frac(n - 1);}void swap(int i, int j) {int temp = a[i];a[i] = a[j];a[j] = temp;}void reverse(int i, int j) { // 閉区間for(int k = i, l = j; k < l; k++, l--) { swap(k, l); }}};Permutation::Permutation(int size) {counter = 0;for(int i = 0; i < size; i++) { a[i] = i; }this -> size = size;}LLUI Permutation::get_counter() {return counter;}int Permutation::get_at(int n) {return a[n];}void Permutation::set_permutation(LLUI n) {counter = n;LLUI f[20];bool enable[20];f[0] = 1;for(int i = 1; i < size; i++) {f[i] = f[i - 1] * i;enable[i] = true;}for(int i = size - 1; 0 <= i; i--) {int p = n / f[i], c = 0, j = 0;while(true) {c += (enable[j] ? 1 : 0);if(c == p + 1) { break; }j++;}enable[j] = false;a[size - 1 - i] = j;n %= f[i];}return;}bool Permutation::next_permutation() {for(int i = size - 2; 0 <= i; i--) {if(a[i] < a[i + 1]) {int j = size - 1;while(a[i] > a[j]) { j--; }swap(i, j);reverse(i + 1, size - 1);counter++;return true;}}reverse(0, size - 1);counter = 0;return false;}bool Permutation::previous_permutation() {for(int i = size - 2; 0 <= i; i--) {if(a[i] > a[i + 1]) {int j = size - 1;while(a[i] < a[j]) { j--; }swap(i, j);reverse(i + 1, size - 1);counter--;return true;}}reverse(0, size - 1);counter = frac(size) - 1;return false;}int n, m, s[9][9];int main() {cin >> n >> m;inc(i, m) {int a, b, c;cin >> a >> b >> c;s[a][b] = c;}Permutation p(n);int ans = 0;do {int d = 0;inc(i, n) {inc(j, i) {d += s[ p.get_at(j) ][ p.get_at(i) ];}}setmax(ans, d);} while(p.next_permutation());cout << ans << endl;return 0;}