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Submission #586533

# Submission time Handle Problem Language Result Execution time Memory
586533 2022-06-30T11:25:34 Z jamezzz Permutation (APIO22_perm) C++17
100 / 100
 10 ms 348 KB 
#include "perm.h"
#include <bits/stdc++.h>
using namespace std;

#define all(x) x.begin(),x.end()
#define pb push_back
typedef long long ll;

vector<int> construct_permutation(ll k){
	vector<int> b4;
	while(k){
		b4.pb((int)(k%4));
		k/=4;
	}
	
	vector<double> ans;
	if(b4.back()==2)ans.pb(0);
	else if(b4.back()==3)ans.pb(1),ans.pb(0);
	b4.pop_back();
	
	while(!b4.empty()){
		if(b4.back()==0)ans.pb(1e9),ans.pb(1e9+1);
		else if(b4.back()==1)ans.pb(1e9),ans.pb(1e9+1),ans.pb(-1);
		else if(b4.back()==2)ans.pb(1e9),ans.pb(-1),ans.pb(1e9+1);
		else{
			int p0=-1,p1=1e9;
			for(int i=0;i<ans.size();++i){
				if(ans[i]==0)p0=i;
				if(ans[i]==1)p1=i;
			}
			if(p1<p0)ans.pb(1e9),ans.pb(1e9+1),ans.pb(1.5);
			else ans.pb(1e9),ans.pb(-1),ans.pb(1e9+1),ans.pb(-2);
		}
		b4.pop_back();
		
		vector<double> srt;
		for(auto x:ans)srt.pb(x);
		sort(all(srt));
		for(auto &x:ans)x=lower_bound(all(srt),x)-srt.begin();
	}
	
	return vector<int>(all(ans));
}

Compilation message

perm.cpp: In function 'std::vector<int> construct_permutation(ll)':
perm.cpp:27:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<double>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |    for(int i=0;i<ans.size();++i){
      |                ~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct

Subtask #2
90.0 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 2 ms 212 KB Output is correct
4 Correct 2 ms 212 KB Output is correct
5 Correct 5 ms 340 KB Output is correct
6 Correct 5 ms 212 KB Output is correct
7 Correct 7 ms 340 KB Output is correct
8 Correct 10 ms 340 KB Output is correct
9 Correct 3 ms 340 KB Output is correct
10 Correct 8 ms 328 KB Output is correct
11 Correct 8 ms 348 KB Output is correct
12 Correct 7 ms 248 KB Output is correct
13 Correct 9 ms 304 KB Output is correct