#include <bits/stdc++.h>
#define N 2000005
#define ll long long int
#define MP make_pair
#define pb push_back
#define ppb pop_back
#define sp " "
#define endl "\n"
#define fi first
#define se second
#define ii pair<int,int>
#define lli pair<ll,ll>
#define fast cin.tie(0);cout.tie(0);ios_base::sync_with_stdio(false)
#define fast2 freopen ("in.txt","r",stdin);freopen ("out.txt","w",stdout);
#define mod 1000000007
#define fs(x,y) for(ll i=1;i<=y;i++) cin>>x[i]
#define fo(i,x,y) for(ll i=x;i<=y;i++)
#define INF 1000000000005
#define ull unsigned long long int
using namespace std;
ll n,m,ar[N],sum,t,cnt[N];
char s[N];
int main()
{
fast;
cin>>n;
cin>>s+1;
// return cout<<"NOT UNIQUE",0;
if(n%2==0)
return cout<<"NOT POSSIBLE",0;
for(int i=1;i<=n;i++)
cnt[s[i]-'A'+1]++;
int flag=0;
for(int i=1;i<=26;i++)
flag+=cnt[i]%2;
if(flag!=1)
return cout<<"NOT POSSIBLE",0;
fo(i,1,26)
if(cnt[i]%2==1)
flag=i;
int tutmac=cnt[flag];
fo(i,1,26)
cnt[i]=0;
int tut=0;
fo(i,1,n/2+1)
{
cnt[s[i]-'A'+1]++;
}
// cout<<"SA"<<endl;
if(cnt[flag]>tutmac/2)
{
ll fail=0;
for(int i=1;i<=n/2+1;i++)
{
if(s[i]!=s[i+n/2+1-fail])
fail++;
}
// cout<<"HELLO"<<sp<<fail<<endl;
if(fail!=1)
return cout<<"NOT POSSIBLE",0;
if(s[1]==s[n] && s[1]==s[n/2+1] && cnt[flag]!=n/2+1)
return cout<<"NOT UNIQUE",0;
for(int i=n/2+2;i<=n;i++)
cout<<s[i];
return 0;
}
ll fail=0;
for(int i=1;i<=n/2+1;i++)
{
if(s[i-fail]!=s[i+n/2])
fail++;
}
if(fail!=1)
return cout<<"NOT POSSIBLE",0;
if(s[1]==s[n] && s[1]==s[n/2+1])
return cout<<"NOT UNIQUE",0;
for(int i=1;i<=n/2;i++)
cout<<s[i];
return 0;
}
/* cd onedrive\desktop\kod
cls
Sinav:21-22 aralik
Aciklama: Muhtemelen 25 aralik
*/
Compilation message
friends.cpp: In function 'int main()':
friends.cpp:30:8: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
cin>>s+1;
~^~
friends.cpp:48:6: warning: unused variable 'tut' [-Wunused-variable]
int tut=0;
^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
376 KB |
Output is correct |
| 2 |
Correct |
5 ms |
508 KB |
Output is correct |
| 3 |
Correct |
5 ms |
376 KB |
Output is correct |
| 4 |
Correct |
5 ms |
376 KB |
Output is correct |
| 5 |
Correct |
5 ms |
376 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
376 KB |
Output is correct |
| 8 |
Correct |
5 ms |
376 KB |
Output is correct |
| 9 |
Correct |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
376 KB |
Output is correct |
| 11 |
Correct |
5 ms |
376 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
380 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
504 KB |
Output is correct |
| 16 |
Correct |
5 ms |
376 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| 18 |
Correct |
5 ms |
376 KB |
Output is correct |
| 19 |
Correct |
5 ms |
376 KB |
Output is correct |
| 20 |
Correct |
5 ms |
376 KB |
Output is correct |
| 21 |
Correct |
5 ms |
376 KB |
Output is correct |
| 22 |
Correct |
5 ms |
380 KB |
Output is correct |
| 23 |
Correct |
5 ms |
376 KB |
Output is correct |
| 24 |
Correct |
5 ms |
376 KB |
Output is correct |
| 25 |
Correct |
5 ms |
376 KB |
Output is correct |
| 26 |
Correct |
5 ms |
376 KB |
Output is correct |
| 27 |
Correct |
5 ms |
376 KB |
Output is correct |
| 28 |
Correct |
5 ms |
376 KB |
Output is correct |
| 29 |
Correct |
5 ms |
376 KB |
Output is correct |
| 30 |
Correct |
5 ms |
376 KB |
Output is correct |
| 31 |
Correct |
5 ms |
376 KB |
Output is correct |
| 32 |
Correct |
5 ms |
376 KB |
Output is correct |
| 33 |
Correct |
5 ms |
376 KB |
Output is correct |
| 34 |
Correct |
5 ms |
248 KB |
Output is correct |
| 35 |
Correct |
5 ms |
380 KB |
Output is correct |
| 36 |
Correct |
5 ms |
376 KB |
Output is correct |
| 37 |
Correct |
5 ms |
376 KB |
Output is correct |
| 38 |
Correct |
5 ms |
376 KB |
Output is correct |
| 39 |
Correct |
5 ms |
376 KB |
Output is correct |
| 40 |
Correct |
5 ms |
376 KB |
Output is correct |
| 41 |
Correct |
5 ms |
376 KB |
Output is correct |
| 42 |
Correct |
5 ms |
376 KB |
Output is correct |
| 43 |
Correct |
5 ms |
376 KB |
Output is correct |
| 44 |
Correct |
5 ms |
376 KB |
Output is correct |
| 45 |
Correct |
5 ms |
376 KB |
Output is correct |
| 46 |
Correct |
5 ms |
376 KB |
Output is correct |
| 47 |
Correct |
5 ms |
376 KB |
Output is correct |
| 48 |
Correct |
5 ms |
376 KB |
Output is correct |
| 49 |
Correct |
5 ms |
376 KB |
Output is correct |
| 50 |
Correct |
5 ms |
376 KB |
Output is correct |
| 51 |
Correct |
5 ms |
376 KB |
Output is correct |
| 52 |
Correct |
5 ms |
376 KB |
Output is correct |
| 53 |
Correct |
5 ms |
376 KB |
Output is correct |
| 54 |
Correct |
5 ms |
376 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
48 ms |
3320 KB |
Output is correct |
| 2 |
Correct |
51 ms |
5216 KB |
Output is correct |
| 3 |
Correct |
52 ms |
5240 KB |
Output is correct |
| 4 |
Correct |
51 ms |
5240 KB |
Output is correct |
| 5 |
Correct |
50 ms |
5364 KB |
Output is correct |
| 6 |
Correct |
10 ms |
4216 KB |
Output is correct |
| 7 |
Correct |
48 ms |
5244 KB |
Output is correct |
| 8 |
Correct |
23 ms |
3832 KB |
Output is correct |
| 9 |
Correct |
43 ms |
4728 KB |
Output is correct |
| 10 |
Correct |
51 ms |
4852 KB |
Output is correct |
| 11 |
Correct |
21 ms |
3704 KB |
Output is correct |
| 12 |
Correct |
5 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
376 KB |
Output is correct |
| 14 |
Correct |
5 ms |
376 KB |
Output is correct |
| 15 |
Correct |
5 ms |
376 KB |
Output is correct |
| 16 |
Correct |
5 ms |
376 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| 18 |
Correct |
5 ms |
376 KB |
Output is correct |
| 19 |
Correct |
5 ms |
376 KB |
Output is correct |
| 20 |
Correct |
5 ms |
376 KB |
Output is correct |
| 21 |
Correct |
5 ms |
376 KB |
Output is correct |
| 22 |
Correct |
5 ms |
376 KB |
Output is correct |
| 23 |
Correct |
5 ms |
376 KB |
Output is correct |
| 24 |
Correct |
5 ms |
376 KB |
Output is correct |
| 25 |
Correct |
5 ms |
376 KB |
Output is correct |
| 26 |
Correct |
5 ms |
376 KB |
Output is correct |
| 27 |
Correct |
5 ms |
376 KB |
Output is correct |
| 28 |
Correct |
5 ms |
376 KB |
Output is correct |
| 29 |
Correct |
5 ms |
376 KB |
Output is correct |
| 30 |
Correct |
5 ms |
376 KB |
Output is correct |
| 31 |
Correct |
5 ms |
376 KB |
Output is correct |
| 32 |
Correct |
5 ms |
376 KB |
Output is correct |
| 33 |
Correct |
5 ms |
376 KB |
Output is correct |
| 34 |
Correct |
5 ms |
376 KB |
Output is correct |
| 35 |
Correct |
5 ms |
376 KB |
Output is correct |
| 36 |
Correct |
5 ms |
376 KB |
Output is correct |
| 37 |
Correct |
5 ms |
376 KB |
Output is correct |
| 38 |
Correct |
5 ms |
376 KB |
Output is correct |
| 39 |
Correct |
5 ms |
376 KB |
Output is correct |
| 40 |
Correct |
5 ms |
376 KB |
Output is correct |
| 41 |
Correct |
5 ms |
376 KB |
Output is correct |
| 42 |
Correct |
5 ms |
376 KB |
Output is correct |
| 43 |
Correct |
5 ms |
376 KB |
Output is correct |
| 44 |
Correct |
5 ms |
376 KB |
Output is correct |
| 45 |
Correct |
5 ms |
376 KB |
Output is correct |
| 46 |
Correct |
5 ms |
376 KB |
Output is correct |
| 47 |
Correct |
5 ms |
376 KB |
Output is correct |
| 48 |
Correct |
6 ms |
312 KB |
Output is correct |
| 49 |
Correct |
5 ms |
376 KB |
Output is correct |
| 50 |
Correct |
6 ms |
376 KB |
Output is correct |
| 51 |
Correct |
5 ms |
376 KB |
Output is correct |
| 52 |
Correct |
5 ms |
376 KB |
Output is correct |
| 53 |
Correct |
5 ms |
376 KB |
Output is correct |
| 54 |
Correct |
5 ms |
376 KB |
Output is correct |
