結果
問題 | No.2234 palindromer |
ユーザー | 👑 seekworser |
提出日時 | 2023-01-24 21:06:13 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 6,868 bytes |
コンパイル時間 | 2,498 ms |
コンパイル使用メモリ | 250,104 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-09-17 22:13:13 |
合計ジャッジ時間 | 3,061 ms |
ジャッジサーバーID (参考情報) |
judge6 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 1 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 1 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 1 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 1 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 1 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> #ifndef LOCAL_TEST #pragma GCC target ("avx") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") #endif // LOCAL_TEST using namespace std; using ll = long long; using pii = pair<int, int>; using pll = pair<ll, ll>; using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>; using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>; using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>; using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>; using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>; using vs = vector<string>; using vvs = vector<vector<string>>; using vvvs = vector<vector<vector<string>>>; template <class T> using priority_queue_min = priority_queue<T, vector<T>, greater<T>>; const double PI = acos(-1.0); int INF = 100100111; ll INFL = 3300300300300300491LL; double EPS = 1e-8; double EPSL = 1e-16; constexpr int MODINT998244353 = 998244353; constexpr int MODINT1000000007 = 1000000007; struct fast_io { fast_io() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(18); } } fastIOtmp; #define all(a) (a).begin(), (a).end() #define sz(x) ((int)(x).size()) #define lbpos(a, x) (int)distance((a).begin(), std::lower_bound(all(a), x)) #define ubpos(a, x) (int)distance((a).begin(), std::upper_bound(all(a), x)) #define rep(i, n) for(ll i = 0, i##_len = ll(n); i < i##_len; ++i) // 0 から n-1 まで昇順 #define repi(i, s, t) for(ll i = ll(s), i##_end = ll(t); i < i##_end; ++i) // s から t まで昇順 #define repis(i, s, t, step) for(ll i = ll(s), i##_end = ll(t); i < i##_end; i+=step) // s から t まで stepずつ #define repir(i, s, t, step) for(ll i = ll(s), i##_end = ll(t); i > i##_end; i+=step) // s から t まで stepずつ #define repe(a, v) for(auto& a : (v)) // v の全要素(変更可能) #define repea(a, v) for(const auto& a : (v)) // v の全要素(変更不可能) #define smod(n, m) ((((n) % (m)) + (m)) % (m)) // 非負mod #define sdiv(n, m) (((n) - smod(n, m)) / (m)) // 非負div #define uniq(a) {sort(all(a)); (a).erase(unique(all(a)), (a).end());} // 重複除去 #define EXIT(a) {cout << (a) << endl; exit(0);} // 強制終了 void Yes(bool b) { cout << (b ? "Yes\n" : "No\n"); return; } ll powm(ll a, ll n, ll mod=INFL) { ll res = 1; while (n > 0) { if (n & 1) res = (res * a) % mod; a = (a * a) % mod; n >>= 1; } return res; } template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // 最大値を更新(更新されたら true を返す) template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // 最小値を更新(更新されたら true を返す) int digit(ll x, int d=10) { int rev=0; while (x > 0) { rev++; x /= d;}; return rev; } // xのd進数桁数 #include <bits/stdc++.h> using namespace std; template <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p); template <class T> inline istream& operator>>(istream& is, vector<T>& v); template <class T, class U> inline ostream& operator<<(ostream& os, const pair<T, U>& p); template <class T> inline ostream& operator<<(ostream& os, const vector<T>& v); template <typename T, typename S> ostream &operator<<(ostream &os, const map<T, S> &mp); template <typename T> ostream &operator<<(ostream &os, const set<T> &st); template <typename T> ostream &operator<<(ostream &os, const multiset<T> &st); template <typename T> ostream &operator<<(ostream &os, queue<T> q); template <typename T> ostream &operator<<(ostream &os, deque<T> q); template <typename T> ostream &operator<<(ostream &os, stack<T> st); template <class T, class Container, class Compare> ostream &operator<<(ostream &os, priority_queue<T, Container, Compare> pq); template <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; } template <class T> inline istream& operator>>(istream& is, vector<T>& v) { repe(x, v) is >> x; return is; } template <class T, class U> inline ostream& operator<<(ostream& os, const pair<T, U>& p) { os << p.first << " " << p.second; return os; } template <class T> inline ostream& operator<<(ostream& os, const vector<T>& v) { rep(i, sz(v)) { os << v.at(i); if (i != sz(v) - 1) os << " "; } return os; } template <typename T, typename S> ostream &operator<<(ostream &os, const map<T, S> &mp) { for (auto &[key, val] : mp) { os << key << ":" << val << " "; } return os; } template <typename T> ostream &operator<<(ostream &os, const set<T> &st) { auto itr = st.begin(); for (int i = 0; i < (int)st.size(); i++) { os << *itr << (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; } template <typename T> ostream &operator<<(ostream &os, const multiset<T> &st) { auto itr = st.begin(); for (int i = 0; i < (int)st.size(); i++) { os << *itr << (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; } template <typename T> ostream &operator<<(ostream &os, queue<T> q) { while (q.size()) { os << q.front() << " "; q.pop(); } return os; } template <typename T> ostream &operator<<(ostream &os, deque<T> q) { while (q.size()) { os << q.front() << " "; q.pop_front(); } return os; } template <typename T> ostream &operator<<(ostream &os, stack<T> st) { while (st.size()) { os << st.top() << " "; st.pop(); } return os; } template <class T, class Container, class Compare> ostream &operator<<(ostream &os, priority_queue<T, Container, Compare> pq) { while (pq.size()) { os << pq.top() << " "; pq.pop(); } return os; } template <class T> inline vector<T>& operator--(vector<T>& v) { repe(x, v) --x; return v; } template <class T> inline vector<T>& operator++(vector<T>& v) { repe(x, v) ++x; return v; } #define debug(...) debug_func(0, #__VA_ARGS__, __VA_ARGS__) // debug print #ifdef LOCAL_TEST template <typename T> void debug_func(int i, T name) { (void)i; (void)name; cerr << endl; } template <typename T1, typename T2, typename... T3> void debug_func(int i, const T1 &name, const T2 &a, const T3 &...b) { for ( ; name[i] != ',' && name[i] != '\0'; i++ ) cerr << name[i]; cerr << ":" << a << " "; debug_func(i + 1, name, b...); } #endif #ifndef LOCAL_TEST template <typename... T> void debug_func(const T &...) {} #endif int main() { string s; cin >> s; string sr = s; reverse(all(sr)); int n = sz(s); // 回文になっている最も長い長さを求める int pal_len = 0; repi(i, 1, n+1) { bool valid = true; rep(j, i) { if (sr[j] != sr[i-1-j]) valid = false; } if (valid) chmax<int>(pal_len, i); } cout << s; rep(i, n - pal_len) cout << sr[pal_len + i]; cout << endl; }