oj.uz

Submission #579802

# Submission time Handle Problem Language Result Execution time Memory
579802 2022-06-19T22:25:57 Z peuch Permutation (APIO22_perm) C++17
10 / 100
 1000 ms 384 KB 
#include "perm.h"
#include<bits/stdc++.h>
using namespace std;

map<long long, vector<int> > dp;

std::vector<int> construct_permutation(long long k)
{
	if(k == 1) return vector<int> (0);
	if(k == 2) return vector<int> (1);
	if(!dp[k].empty()) return dp[k];
//	printf("%lld\n", k);
	for(long long i = sqrt(k) + 1; i > 1; i--){
		if(!dp[k].empty()) break;
		if(k % i != 0) continue;
//		printf("Testing dividing %lld by %d\n", k, i);
		vector<int> aux1 = construct_permutation(i);
		vector<int> aux2 = construct_permutation(k / i);
		if(dp[k].empty() || aux1.size() + aux2.size() < dp[k].size()){
			dp[k].clear();
			for(int i = 0; i < aux1.size(); i++)
				dp[k].push_back(aux1[i]);
			for(int i = 0; i < aux2.size(); i++)
				dp[k].push_back(aux2[i] + aux1.size());
		}
	}
//	printf("Ok\n");
	if(dp[k].empty()){
		dp[k] = construct_permutation(k - 1);
		dp[k].insert(dp[k].begin(), dp[k].size());
	}
//	printf("%lld\n", k);
	return dp[k];
}

Compilation message

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:21:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |    for(int i = 0; i < aux1.size(); i++)
      |                   ~~^~~~~~~~~~~~~
perm.cpp:23:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |    for(int i = 0; i < aux2.size(); i++)
      |                   ~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct

Subtask #2
0.0 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Execution timed out 1089 ms 212 KB Time limit exceeded
6 Halted 0 ms 0 KB -