Submission #983395

#TimeUsernameProblemLanguageResultExecution timeMemory
983395Halym2007Permutation (APIO22_perm)C++17
71.22 / 100
10 ms1372 KiB
#include <bits/stdc++.h> #include "perm.h" using namespace std; #define pb push_back #define sz size() #define ll long long vector<int> construct_permutation(long long k) { vector <int> jog; deque <int> d; k--; int st = 0; for (ll i = 60; i >= 1; i--) { ll x = (1LL << i) - 1; while (x <= k) { k -= x; for (int j = st + i; j > st; j--) { d.push_front(j); } st += i; } } for (int i : d) { jog.pb (i - 1); } return jog; } //static long long MX=1e18; // //static bool check_permutation(vector<int> v) //{ // sort(v.begin(),v.end()); // for(int i = 0; i < v.size(); i++) // if(v[i] != i) return 0; // return 1; //} // //long long count_increasing(const vector<int>& v) { // vector<long long> dp(v.size() + 1, 0); // dp[0] = 1; // for (int x : v) // { // for (int i = 0; i <= x; i++) // { // dp[x+1] += dp[i]; // dp[x+1] = min(dp[x+1],MX+1); // } // } // long long result = 0; // for (int i = 0; i <= (int)v.size(); i++){ // result += dp[i]; // result = min(result,MX+1); // } // return result; //} // //int main() { // int t; // assert(1 == scanf("%d", &t)); // while(t--) { // long long k; // assert(1 == scanf("%lld",&k)); // vector<int> ret=construct_permutation(k); // if(!check_permutation(ret)) // { // printf("WA: Returned array is not a permutation\n"); // exit(0); // } // long long inc=count_increasing(ret); // if(inc!=k) // { // if(inc==MX+1) // printf("WA: Expected %lld increasing subsequences, found more than %lld\n",k, MX); // else // printf("WA: Expected %lld increasing subsequences, found %lld\n",k,inc); // exit(0); // } // printf("%d\n",(int)ret.size()); // for(int i=0;i<ret.size();i++) // { // printf("%d",ret[i]); // if(i+1==ret.size()) // printf("\n"); // else // printf(" "); // } // } // return 0; //}
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