slom

input/code.cpp: In function 'int main()':
input/code.cpp:34:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i=0; i<s.size(); ++i){
                          ^

#include <iostream>
using namespace std;
int X;
string s;

int n[1010];
char ans[1010];


bool u[1010];

int get(int c, int k){
  for (int i=0; i<k; ++i) c=n[c];
  return c;
}

int gl(int c, int d, int x){
  if (x==0) return c;
  if (u[c]) return get(c, x%d);
  u[c]=1;
  int rv=gl(n[c], d+1, x-1);
  u[c]=0;
  return rv;
}

int main(){
  cin >> X >> s;
  for (int i=1; i<((int)s.size()-1)/2+1; ++i){
    n[2*i]=i;
    n[2*i-1]=s.size()-i;
  }
  if (s.size()%2==0) n[s.size()-1]=s.size()/2;
  
  for (int i=0; i<s.size(); ++i){
    int k=i;
    k=gl(i, 0, X);
    ans[k]=s[i];
  }
  cout << ans << "\n";
}

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