제출 #338217

#제출 시각아이디문제언어결과실행 시간메모리
338217limabeans세 명의 친구들 (BOI14_friends)C++17
35 / 100
1080 ms7668 KiB
#include <bits/stdc++.h> using namespace std; template<typename T> void out(T x) { cout << x << endl; exit(0); } #define watch(x) cout << (#x) << " is " << (x) << endl using ll = long long; const int maxn = 1e6 + 5; void notp() { out("NOT POSSIBLE"); } void notu() { out("NOT UNIQUE"); } int main() { ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); int n; string u; cin>>n>>u; if (n%2==0) notp(); string ans; for (int i=0; i<n; i++) { string tmp = u.substr(0,i) + u.substr(i+1); string s = tmp.substr(0,(n-1)/2); string t = tmp.substr((n-1)/2); if (s==t) { if (ans!="" && ans!=s) notu(); ans = s; } } if (ans=="") notp(); cout<<ans<<endl; return 0; }
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