Submission #575240

#	Time	Username	Problem	Language	Result	Execution time	Memory
575240		AJ00	Permutation (APIO22_perm)	C++17	91.33 / 100	2 ms	340 KiB

perm

#include <bits/stdc++.h>

using namespace std;

int n;
const int MOD = 1000000007;

vector<int> construct_permutation(long long int k){
    vector<int> ans,op;
    ans.push_back(0);
    if (k == 2){
        return ans;
    }
   // cerr << dp[k] << "\n";
    long long int cur = k;
    while (cur != 2){
        if (cur%2==0){
            op.push_back(2);
            cur = (cur/2);
        }
        else {
            op.push_back(1);
            cur--;
        }
    }
    reverse(op.begin(),op.end());
    int maxm = 0,minm=0;
    for (int e: op){
        if (e == 2){
            ++maxm;
            ans.push_back(maxm);
        }
        else {
            --minm;
            ans.push_back(minm);
        }
    }
    for (int i = 0; i < ans.size(); i++){
        ans[i] += abs(minm);
    }
    return ans;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:38:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |     for (int i = 0; i < ans.size(); i++){
      |                     ~~^~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 81.333333333 / 90