Submission #1349556

#	Time	Username	Problem	Language	Result	Execution time	Memory
1349556		jump	Permutation (APIO22_perm)	C++20	Compilation error	0 ms	0 KiB

perm

#include "perm.h"

std::vector<int> construct_permutation(long long k)
{
	// +1->1,2,3,5,4<-*2+1
	if(k==1)return {};
	if(k==2)return {0};
	if(k==3)return {1,0};
	if(k==4)return {2,1,0};
	std::vector<int> ans;
	int m = k%4;
	if(m==0||m==2)ans=construct_permutation(k/2),ans.push_back(ans.size());
	if(m==1)ans=construct_permutation(k-1),abs.insert(ans.begin(),ans.size());
	if(m==3)ans=construct_permutation(k-3),for(int i=0;i<ans.size();i++)if(ans[i]>=2)ans[i]+=1;
	if(m==3)ans.push_back(2);
	return ans;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:13:48: error: 'abs' was not declared in this scope; did you mean 'ans'?
   13 |         if(m==1)ans=construct_permutation(k-1),abs.insert(ans.begin(),ans.size());
      |                                                ^~~
      |                                                ans
perm.cpp:14:48: error: expected primary-expression before 'for'
   14 |         if(m==3)ans=construct_permutation(k-3),for(int i=0;i<ans.size();i++)if(ans[i]>=2)ans[i]+=1;
      |                                                ^~~
perm.cpp:14:60: error: 'i' was not declared in this scope
   14 |         if(m==3)ans=construct_permutation(k-3),for(int i=0;i<ans.size();i++)if(ans[i]>=2)ans[i]+=1;
      |                                                            ^