Submission #981588

#	Time	Username	Problem	Language	Result	Execution time	Memory
981588		c2zi6	Permutation (APIO22_perm)	C++17	91.33 / 100	3 ms	504 KiB

perm

#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define all(a) (a).begin(), (a).end()
#define replr(i, a, b) for (int i = int(a); i <= int(b); ++i)
#define reprl(i, a, b) for (int i = int(a); i >= int(b); --i)
#define rep(i, n) for (int i = 0; i < int(n); ++i)
#define mkp(a, b) make_pair(a, b)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<PII> VPI;
typedef vector<VI> VVI;
typedef vector<VVI> VVVI;
typedef vector<VPI> VVPI;
typedef pair<ll, ll> PLL;
typedef vector<ll> VL;
typedef vector<PLL> VPL;
typedef vector<VL> VVL;
typedef vector<VVL> VVVL;
typedef vector<VPL> VVPL;
template<class T> T setmax(T& a, T b) {if (a < b) return a = b; return a;}
template<class T> T setmin(T& a, T b) {if (a < b) return a; return a = b;}
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template<class T>
using indset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#include "perm.h"

VI compress(VI a) {
	map<int, int> ind;
	for (int x : a) ind[x] = 0;
	{int i = 0; for (auto& p : ind) p.ss = i++;}
	for (int& x : a) x = ind[x];
	return a;
}
void jnjel(VI& a) {
	VI b;
	replr(i, 1, a.size()-1) b.pb(a[i]);
	a = b;
}

VI construct_permutation(ll k) {
	VI b;
	reprl(i, 62, 0) if (k & (1ll<<i)) b.pb(i);
	VI ret;
	rep(i, b[0]) ret.pb(10*(i+1));
	jnjel(b);
	for (int x : b) {
		ret.pb(x * 10 + 1);
	}
	return compress(ret);
}

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