제출 #730837

#제출 시각아이디문제언어결과실행 시간메모리
730837Jarif_Rahman순열 (APIO22_perm)C++17
91.33 / 100
2 ms340 KiB
#include "perm.h" #include <bits/stdc++.h> #define pb push_back #define f first #define sc second using namespace std; typedef long long int ll; typedef string str; vector<int> construct_permutation(ll k){ k--; vector<int> sth; int n = 0; int P = 0; while((1LL<<P)-1 <= k) P++; P--; k-=(1LL<<P)-1; n+=P; vector<int> s(P); ll ss = 0; for(int i = P-1; i > 0; i--){ int p = 1; while((1LL<<p)-1 + ((1LL<<p)-1)*((1LL<<i)-1) <= k) p++; p--; k-=(1LL<<p)-1 + ((1LL<<p)-1)*((1LL<<i)-1); s[i] = p; n+=p; } while(k > 0){ int p = 0; while((1LL<<p)-1 <= k) p++; p--; k-=(1LL<<p)-1; sth.pb(p); n+=p; } vector<int> ans; for(int x: sth){ for(int i = n-x; i < n; i++) ans.pb(i); n-=x; } vector<int> anss, pp; for(int i = n-P; i < n; i++) pp.pb(i); n-=P; if(!pp.empty()) anss.pb(pp[0]); for(int i = 1; i < P; i++){ while(s[P-i]--) anss.pb(n-1), n--; anss.pb(pp[i]); } ans.insert(ans.end(), anss.begin(), anss.end()); return ans; }

컴파일 시 표준 에러 (stderr) 메시지

perm.cpp: In function 'std::vector<int> construct_permutation(ll)':
perm.cpp:24:8: warning: unused variable 'ss' [-Wunused-variable]
   24 |     ll ss = 0;
      |        ^~
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