제출 #641289

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
641289		baojiaopisu	순열 (APIO22_perm)	C++17	91.33 / 100	5 ms	388 KiB

perm

#include<bits/stdc++.h>

using namespace std;

using ll = long long;
using ld = long double;
using ull = unsigned long long;

using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pld = pair<ld, ld>;

#define fi first
#define se second
#define pb push_back
#define pf push_front
#define mp make_pair
#define ins insert
#define btpc __builtin_popcount
#define btclz __builtin_clz

#define sz(x) (int)(x.size());
#define all(x) x.begin(), x.end()
#define debug(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int d4x[4] = {1, 0, -1, 0}; int d4y[4] = {0, 1, 0, -1};
int d8x[8] = {0, 1, 1, 1, 0, -1, -1, -1};
int d8y[8] = {1, 1, 0, -1, -1, -1, 0, 1};

template<class X, class Y>
    bool minimize(X &x, const Y &y) {
        if (x > y)
        {
            x = y;
            return true;
        }
        return false;
    }
template<class X, class Y>
    bool maximize(X &x, const Y &y) {
        if (x < y)
        {
            x = y;
            return true;
        }
        return false;
    }

const int MOD = 1e9 + 7; //998244353

template<class X, class Y>
	void add(X &x, const Y &y) {
		x = (x + y);
		if(x >= MOD) x -= MOD;
	}

template<class X, class Y> 
	void sub(X &x, const Y &y) {
		x = (x - y);
		if(x < 0) x += MOD;
	}

/* Author : Le Ngoc Bao Anh, 12A5, LQD High School for Gifted Student*/

const ll INF = 1e9;
const int N = 1e5 + 10;

vector<int> insert(vector<int> ans, int pos, int iter) {
	vector<int> res;
	for(int i = 0; i < pos; i++) res.pb(ans[i]);
	res.pb(iter);
	for(int i = pos; i < ans.size(); i++) res.pb(ans[i]);
	return res;
}

vector<int> construct_permutation(ll k) {
	int LOG = 60;
	ll curr = 1, n = k;
	vector<int> ans;
	int iter = 0;

	while(n > curr) {
		++iter;
		if(curr * 2 <= n) {
			ans = insert(ans, iter - 1, iter);
			curr *= 2;
			continue;
		} else {
			for(int i = LOG; i >= 0; i--) {
				if(curr + (1ll << i) <= n) {
					ans = insert(ans, i, iter);
					curr += (1ll << i);
					++iter;
				}
			}
		}
	}

	for(auto &x : ans) --x;
	return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

perm.cpp: In function 'std::vector<int> insert(std::vector<int>, int, int)':
perm.cpp:74:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |  for(int i = pos; i < ans.size(); i++) res.pb(ans[i]);
      |                   ~~^~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 81.333333333 / 90