結果

問題 No.270 next_permutation (1)
コンテスト
ユーザー heno239
提出日時 2020-08-21 09:51:44
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 28 ms / 2,000 ms
コード長 3,680 bytes
コンパイル時間 1,193 ms
コンパイル使用メモリ 116,656 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-10-14 04:26:26
合計ジャッジ時間 2,550 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
other AC * 15
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function 'void solve()':
main.cpp:145:32: warning: 'mem' may be used uninitialized [-Wmaybe-uninitialized]
  145 |                         a[chk] = mem;
main.cpp:137:29: note: 'mem' was declared here
  137 |                         int mem;
      |                             ^~~

ソースコード

diff # 

#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
#include<cassert>
#include<complex>
#include<numeric>
using namespace std;

//#define int long long
typedef long long ll;

typedef unsigned long long ul;
typedef unsigned int ui;
constexpr ll mod = 1000000007;
const ll INF = mod * mod;
typedef pair<int, int>P;
#define stop char nyaa;cin>>nyaa;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
#define all(v) (v).begin(),(v).end()
typedef pair<ll, ll> LP;
typedef double ld;
typedef pair<ld, ld> LDP;
const ld eps = 1e-12;
const ld pi = acos(-1.0);

ll mod_pow(ll x, ll n, ll m) {
	ll res = 1;
	while (n) {
		if (n & 1)res = res * x % m;
		x = x * x % m; n >>= 1;
	}
	return res;
}
struct modint {
	ll n;
	modint() :n(0) { ; }
	modint(ll m) :n(m) {
		if (n >= mod)n %= mod;
		else if (n < 0)n = (n % mod + mod) % mod;
	}
	operator int() { return n; }
};
bool operator==(modint a, modint b) { return a.n == b.n; }
modint operator+=(modint& a, modint b) { a.n += b.n; if (a.n >= mod)a.n -= mod; return a; }
modint operator-=(modint& a, modint b) { a.n -= b.n; if (a.n < 0)a.n += mod; return a; }
modint operator*=(modint& a, modint b) { a.n = ((ll)a.n * b.n) % mod; return a; }
modint operator+(modint a, modint b) { return a += b; }
modint operator-(modint a, modint b) { return a -= b; }
modint operator*(modint a, modint b) { return a *= b; }
modint operator^(modint a, ll n) {
	if (n == 0)return modint(1);
	modint res = (a * a) ^ (n / 2);
	if (n % 2)res = res * a;
	return res;
}

ll inv(ll a, ll p) {
	return (a == 1 ? 1 : (1 - p * inv(p % a, a)) / a + p);
}
modint operator/(modint a, modint b) { return a * modint(inv(b, mod)); }

const int max_n = 1 << 2;
modint fact[max_n], factinv[max_n];
void init_f() {
	fact[0] = modint(1);
	for (int i = 0; i < max_n - 1; i++) {
		fact[i + 1] = fact[i] * modint(i + 1);
	}
	factinv[max_n - 1] = modint(1) / fact[max_n - 1];
	for (int i = max_n - 2; i >= 0; i--) {
		factinv[i] = factinv[i + 1] * modint(i + 1);
	}
}
modint comb(int a, int b) {
	if (a < 0 || b < 0 || a < b)return 0;
	return fact[a] * factinv[b] * factinv[a - b];
}

ll gcd(ll a, ll b) {
	if (a < b)swap(a, b);
	while (b) {
		ll r = a % b; a = b; b = r;
	}
	return a;
}


void solve() {
	int n, k; cin >> n >> k;
	vector<int> a(n),b(n);
	rep(i, n)cin >> a[i];
	rep(i, n)cin >> b[i];
	ll sum = 0;
	rep(i, n) {
		sum += abs(a[i] - b[i]);
	}
	ll ans = 0;
	if (k > 0)ans += sum;
	rep(aa, k - 1) {
		vector<int> memo;
		memo.push_back(a[n - 1]);
		int chk = -1;
		per(i, n-1) {
			if (a[i] <= a[i + 1]) {
				chk = i; break;
			}
			memo.push_back(a[i]);
		}
		if (chk < 0) {
			sum = 0;
			rep(i, n) {
				a[i] = i + 1;
				sum += abs(a[i] - b[i]);
			}
		}
		else {
			Rep(j, chk, n)sum -= abs(a[j] - b[j]);
			int mem;
			rep(j, memo.size()) {
				if (memo[j] > a[chk]) {
					mem = memo[j];
					memo[j] = a[chk];
					break;
				}
			}
			a[chk] = mem;
			rep(j, memo.size()) {
				a[chk + 1+j] = memo[j];
			}
			Rep(j, chk, n)sum += abs(a[j] - b[j]);
			
		}
		ans += sum;
	}
	cout << ans << "\n";
}




signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	//cout << fixed << setprecision(10);
	//init_f();
	//expr();
	//int t; cin >> t; rep(i, t)
	//while (cin >> n >> m>>s1>>s2>>t, n)
	solve();
	return 0;
}
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