Submission #671081

#	Time	Username	Problem	Language	Result	Execution time	Memory
671081		AdamGS	Permutation (APIO22_perm)	C++17	93.33 / 100	2 ms	360 KiB

perm

#include "perm.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
vector<int>construct_permutation(ll k) {
        vector<int>ans;
        if(k==1) return ans;
        if(k%3==0) {
                ans=construct_permutation(k/3);
                rep(i, ans.size()) ans[i]+=2;
                reverse(all(ans));
                ans.pb(0);
                ans.pb(1);
                reverse(all(ans));
                return ans;
        }
        if(k%2==1) {
                ans=construct_permutation(k-1);
                reverse(all(ans));
                ans.pb(ans.size());
                reverse(all(ans));
                return ans;
        }
        ans=construct_permutation(k/2);
        rep(i, ans.size()) ++ans[i];
        reverse(all(ans));
        ans.pb(0);
        reverse(all(ans));
        return ans;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(ll)':
perm.cpp:6:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 | #define rep(a, b) for(int a = 0; a < (b); ++a)
      |                                    ^
perm.cpp:16:17: note: in expansion of macro 'rep'
   16 |                 rep(i, ans.size()) ans[i]+=2;
      |                 ^~~
perm.cpp:6:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 | #define rep(a, b) for(int a = 0; a < (b); ++a)
      |                                    ^
perm.cpp:31:9: note: in expansion of macro 'rep'
   31 |         rep(i, ans.size()) ++ans[i];
      |         ^~~

• Subtask 1: 10 / 10
• Subtask 2: 83.333333331 / 90