# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
579806 |
2022-06-19T22:40:25 Z |
peuch |
Permutation (APIO22_perm) |
C++17 |
|
1000 ms |
692 KB |
#include "perm.h"
#include<bits/stdc++.h>
using namespace std;
unordered_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 %lld\n", k, (long long)sqrt(k) + 1);
// printf("%lld\n", k);
for(long long i = 2; i * i <= k; i++){
// printf("%lld\n", 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);
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:21:20: 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:23:20: 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++)
| ~~^~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
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 |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
4 ms |
340 KB |
Output is correct |
5 |
Correct |
573 ms |
692 KB |
Output is correct |
6 |
Correct |
120 ms |
648 KB |
Output is correct |
7 |
Execution timed out |
1092 ms |
332 KB |
Time limit exceeded |
8 |
Halted |
0 ms |
0 KB |
- |