# | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
---|---|---|---|---|---|---|---|
971667 | 2024-04-29T07:14:06 Z | batsukh2006 | 세 명의 친구들 (BOI14_friends) | C++17 | 44 ms | 6496 KB |
#include<iostream> #include<stdio.h> #include<math.h> #include<map> #include<string> #include<algorithm> #include<vector> #include<string.h> #include<utility> #include<set> #include<cmath> #include<queue> #include<deque> #include<functional> #include<stack> #include<limits.h> #include<iomanip> #include<unordered_map> #include<numeric> #include<tuple> #include<bitset> using namespace std; #define MOD 1000000007 #define int long long #define endl '\n' void solve(){ int n; cin>>n; vector<char> u(n+1); for(int i=1; i<=n; i++) cin>>u[i]; if(n%2==0){ cout<<"NOT POSSIBLE"; }else{ int h=n/2; int cnt=0; vector<int> mp(26); for(int i=1; i<=h; i++){ if(u[i]==u[i+h]) cnt++; else break; } for(int i=1; i<=n; i++) mp[u[i]-'A']++; int zero=0; for(int i=0; i<26; i++){ if(mp[i]>0) zero++; } if(zero==1){ for(int i=1; i<=n/2; i++) cout<<u[i]; }else if(cnt==h&&u[1]==u[n]){ cout<<"NOT UNIQUE"; }else{ int one=0,war=0,zero=0; for(int i=0; i<26; i++){ if(mp[i]==1) one++; if(mp[i]%2==1) war++; } if(war>1){ cout<<"NOT POSSIBLE"; }else{ if(one==1){ vector<int> v; for(int i=1; i<=n; i++){ if(mp[u[i]-'A']!=1) v.push_back(u[i]-'A'); } int need=0; for(int i=0; i<n/2; i++){ if(v[i]==v[i+h]) need++; } if(need==n/2){ vector<char> s; for(int i=0; i<n/2; i++){ char c=v[i]+'A'; s.push_back(c); } for(int i=0; i<s.size(); i++) cout<<s[i]; }else{ cout<<"NOT POSSIBLE"; } }else{ vector<char> s; int i=1,j=n/2+1; while(i<=n/2+1&&j<=n){ if(u[i]==u[j]){ s.push_back(u[i]); i++; j++; }else{ if(mp[u[i]-'A']%2==1){ i++; }else if(mp[u[j]-'A']%2==1){ j++; }else{ break; } } } if(s.size()==n/2){ for(int i=0; i<s.size(); i++) cout<<s[i]; }else{ s.clear(); int i=1,j=n/2-1; while(i<=n/2&&j<=n){ if(u[i]==u[j]){ s.push_back(u[i]); i++; j++; }else{ if(mp[u[i]-'A']%2==1){ i++; }else if(mp[u[j]-'A']%2==1){ j++; }else{ war=1; break; } } } if(s.size()==n/2){ for(int i=0; i<s.size(); i++) cout<<s[i]; }else{ s.clear(); int i=1,j=n/2+2; while(i<=n/2+1&&j<=n){ if(u[i]==u[j]){ s.push_back(u[i]); i++; j++; }else{ if(mp[u[i]-'A']%2==1){ i++; }else if(mp[u[j]-'A']%2==1){ j++; }else{ war=1; break; } } } if(s.size()==n/2){ for(int i=0; i<s.size(); i++) cout<<s[i]; }else{ cout<<"NOT POSSIBLE"; return; } } } } } } } } signed main(){ // freopen("file.in", "r", stdin); // freopen("file.out", "w", stdout); ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); int T=1; // cin>>T; while(T--){ solve(); cout<<endl; } return 0; }
Compilation message
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 0 ms | 348 KB | Output is correct |
2 | Correct | 0 ms | 348 KB | Output is correct |
3 | Correct | 0 ms | 348 KB | Output is correct |
4 | Correct | 0 ms | 348 KB | Output is correct |
5 | Correct | 0 ms | 348 KB | Output is correct |
6 | Correct | 0 ms | 348 KB | Output is correct |
7 | Correct | 1 ms | 464 KB | Output is correct |
8 | Correct | 0 ms | 348 KB | Output is correct |
9 | Correct | 0 ms | 348 KB | Output is correct |
10 | Correct | 1 ms | 348 KB | Output is correct |
11 | Correct | 0 ms | 348 KB | Output is correct |
12 | Correct | 0 ms | 348 KB | Output is correct |
13 | Correct | 0 ms | 348 KB | Output is correct |
14 | Correct | 0 ms | 348 KB | Output is correct |
15 | Correct | 0 ms | 348 KB | Output is correct |
16 | Correct | 1 ms | 348 KB | Output is correct |
17 | Correct | 1 ms | 348 KB | Output is correct |
18 | Correct | 0 ms | 348 KB | Output is correct |
19 | Correct | 0 ms | 348 KB | Output is correct |
20 | Correct | 1 ms | 348 KB | Output is correct |
21 | Correct | 1 ms | 348 KB | Output is correct |
22 | Correct | 0 ms | 344 KB | Output is correct |
23 | Correct | 1 ms | 348 KB | Output is correct |
24 | Correct | 0 ms | 348 KB | Output is correct |
25 | Correct | 1 ms | 348 KB | Output is correct |
26 | Correct | 1 ms | 348 KB | Output is correct |
27 | Correct | 1 ms | 348 KB | Output is correct |
28 | Correct | 0 ms | 348 KB | Output is correct |
29 | Correct | 0 ms | 348 KB | Output is correct |
30 | Correct | 0 ms | 348 KB | Output is correct |
31 | Correct | 0 ms | 344 KB | Output is correct |
32 | Correct | 0 ms | 348 KB | Output is correct |
33 | Correct | 0 ms | 348 KB | Output is correct |
34 | Correct | 0 ms | 348 KB | Output is correct |
35 | Correct | 0 ms | 344 KB | Output is correct |
36 | Correct | 0 ms | 348 KB | Output is correct |
37 | Correct | 0 ms | 348 KB | Output is correct |
38 | Correct | 1 ms | 504 KB | Output is correct |
39 | Correct | 0 ms | 348 KB | Output is correct |
40 | Correct | 0 ms | 348 KB | Output is correct |
41 | Correct | 0 ms | 348 KB | Output is correct |
42 | Correct | 1 ms | 344 KB | Output is correct |
43 | Correct | 1 ms | 344 KB | Output is correct |
44 | Correct | 0 ms | 348 KB | Output is correct |
45 | Correct | 0 ms | 348 KB | Output is correct |
46 | Correct | 0 ms | 348 KB | Output is correct |
47 | Correct | 0 ms | 348 KB | Output is correct |
48 | Correct | 0 ms | 352 KB | Output is correct |
49 | Correct | 0 ms | 348 KB | Output is correct |
50 | Correct | 0 ms | 344 KB | Output is correct |
51 | Correct | 0 ms | 344 KB | Output is correct |
52 | Correct | 0 ms | 352 KB | Output is correct |
53 | Correct | 0 ms | 352 KB | Output is correct |
54 | Correct | 0 ms | 348 KB | Output is correct |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 38 ms | 6380 KB | Output is correct |
2 | Correct | 38 ms | 6348 KB | Output is correct |
3 | Correct | 41 ms | 6496 KB | Output is correct |
4 | Correct | 44 ms | 6348 KB | Output is correct |
5 | Correct | 37 ms | 6240 KB | Output is correct |
6 | Correct | 18 ms | 4184 KB | Output is correct |
7 | Correct | 39 ms | 5336 KB | Output is correct |
8 | Correct | 18 ms | 3928 KB | Output is correct |
9 | Correct | 34 ms | 5644 KB | Output is correct |
10 | Correct | 35 ms | 5836 KB | Output is correct |
11 | Correct | 24 ms | 4816 KB | Output is correct |
12 | Correct | 0 ms | 348 KB | Output is correct |
13 | Correct | 0 ms | 452 KB | Output is correct |
14 | Correct | 0 ms | 344 KB | Output is correct |
15 | Correct | 0 ms | 344 KB | Output is correct |
16 | Correct | 0 ms | 348 KB | Output is correct |
17 | Correct | 0 ms | 380 KB | Output is correct |
18 | Correct | 0 ms | 348 KB | Output is correct |
19 | Correct | 0 ms | 348 KB | Output is correct |
20 | Correct | 0 ms | 348 KB | Output is correct |
21 | Correct | 0 ms | 348 KB | Output is correct |
22 | Correct | 0 ms | 348 KB | Output is correct |
23 | Correct | 0 ms | 348 KB | Output is correct |
24 | Correct | 0 ms | 348 KB | Output is correct |
25 | Correct | 0 ms | 348 KB | Output is correct |
26 | Correct | 0 ms | 348 KB | Output is correct |
27 | Correct | 0 ms | 348 KB | Output is correct |
28 | Correct | 0 ms | 348 KB | Output is correct |
29 | Correct | 0 ms | 348 KB | Output is correct |
30 | Correct | 0 ms | 348 KB | Output is correct |
31 | Correct | 0 ms | 452 KB | Output is correct |
32 | Correct | 0 ms | 348 KB | Output is correct |
33 | Correct | 0 ms | 348 KB | Output is correct |
34 | Correct | 0 ms | 348 KB | Output is correct |
35 | Correct | 0 ms | 348 KB | Output is correct |
36 | Correct | 1 ms | 348 KB | Output is correct |
37 | Correct | 1 ms | 348 KB | Output is correct |
38 | Correct | 0 ms | 348 KB | Output is correct |
39 | Correct | 0 ms | 348 KB | Output is correct |
40 | Correct | 0 ms | 348 KB | Output is correct |
41 | Correct | 1 ms | 344 KB | Output is correct |
42 | Correct | 0 ms | 348 KB | Output is correct |
43 | Correct | 0 ms | 348 KB | Output is correct |
44 | Correct | 0 ms | 348 KB | Output is correct |
45 | Correct | 0 ms | 348 KB | Output is correct |
46 | Correct | 0 ms | 344 KB | Output is correct |
47 | Correct | 1 ms | 348 KB | Output is correct |
48 | Correct | 0 ms | 348 KB | Output is correct |
49 | Correct | 1 ms | 348 KB | Output is correct |
50 | Correct | 0 ms | 348 KB | Output is correct |
51 | Correct | 0 ms | 348 KB | Output is correct |
52 | Correct | 0 ms | 348 KB | Output is correct |
53 | Correct | 0 ms | 348 KB | Output is correct |
54 | Correct | 0 ms | 352 KB | Output is correct |