slom

#include <bits/stdc++.h>
#define ll long long
#define INF 999999999
#define LINF 999999999999999999LL
#define N (1<<17)
#define M 1000000007

using namespace std;

int v[1001][32];

int main () {
  int n;
  string s;
  cin>>n>>s;
  string ans = s;
  int l = s.length();
  for (int i = 0; i < l; i++) {
    if (i % 2 == 0) {
      v[i][0] = i / 2;
    } else {
      v[i][0] = l - 1 - i / 2;
    }
  }
  cout<<endl;
  for (int i = 1; i < 32; i++) {
    for (int j = 0; j < l; j++) {
      v[j][i] = v[v[j][i - 1]][i - 1];
    }
  }
  
  for (int j = 0; j < l; j++) {
    int p = j;
    for (int i = 0; i < 32; i++) {
      if (n & (1<<i)) {
	p = v[p][i];
      }
    }
    ans[p] = s[j];
  }
  cout<<ans<<endl;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED