結果
問題 | No.263 Common Palindromes Extra |
ユーザー | y_mazun |
提出日時 | 2015-08-31 21:35:13 |
言語 | C++11 (gcc 11.4.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,131 bytes |
コンパイル時間 | 654 ms |
コンパイル使用メモリ | 74,532 KB |
実行使用メモリ | 200,284 KB |
最終ジャッジ日時 | 2024-07-18 17:14:31 |
合計ジャッジ時間 | 2,050 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 4 ms
5,248 KB |
testcase_01 | AC | 1 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | AC | 31 ms
19,080 KB |
testcase_06 | AC | 6 ms
5,376 KB |
testcase_07 | WA | - |
testcase_08 | AC | 75 ms
62,044 KB |
testcase_09 | WA | - |
testcase_10 | MLE | - |
testcase_11 | WA | - |
コンパイルメッセージ
main.cpp: In function ‘std::string getStr()’: main.cpp:144:8: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 144 | scanf("%s", buff); | ~~~~~^~~~~~~~~~~~
ソースコード
#include <cstdio> #include <iostream> #include <queue> #include <set> using namespace std; template<typename C, typename C::value_type low, typename C::value_type high> class PalindromeTree{ const static int m = high - low + 1; typedef typename C::value_type T; struct node{ int next[m]; int len; int sufflink; }; const C s; int len; int num; void initTree(){ num = 2; suff = 2; tree[1].len = -1; tree[1].sufflink = 1; tree[2].len = 0; tree[2].sufflink = 1; } public: vector<node> tree; int suff; bool addLetter(int pos){ int cur = suff; int curLen = 0; const int let = s[pos] - low; while(true){ curLen = tree[cur].len; if(pos - 1 - curLen >= 0 && s[pos - 1 - curLen] == s[pos]) break; cur = tree[cur].sufflink; } if(tree[cur].next[let]){ suff = tree[cur].next[let]; return false; } num++; if((int)tree.size() <= num) tree.push_back(node()); suff = num; tree[num].len = tree[cur].len + 2; tree[cur].next[let] = num; if(tree[num].len == 1){ tree[num].sufflink = 2; return true; } while(true){ cur = tree[cur].sufflink; curLen = tree[cur].len; if(pos - 1 - curLen >= 0 && s[pos - 1 - curLen] == s[pos]){ tree[num].sufflink = tree[cur].next[let]; break; } } return true; } PalindromeTree(const C &s) : s(s), len(s.size()), tree(3){ initTree(); } void build(){ for(int i = 0; i < len; i++){ addLetter(i); } } static long long countSamePalindrome(C &&s, C &&t, const C &sp){ long long ans = 0; const int ss = s.size(); const C sum = s + sp + t; s = t = ""; PalindromeTree tree(sum); vector<int> scnt(sum.size() + 3); vector<int> tcnt(sum.size() + 3); for(int i = 0; i < (int)sum.size(); i++){ tree.addLetter(i); int pos = tree.suff; const node &nd = tree.tree[pos]; if(i - nd.len + 1 < ss){ scnt[pos]++; }else if(i - nd.len + 1 >= (int)(ss + sp.size())){ tcnt[pos]++; } } for(int i = 0; i < 2; i++){ vector<int> &v = i == 0 ? scnt : tcnt; vector<int> ref(v.size()); for(int j = 3; j < (int)v.size(); j++){ if(v[j] > 0 && tree.tree[j].sufflink >= 3){ ref[tree.tree[j].sufflink]++; } } queue<int> q; for(int j = 3; j < (int)v.size(); j++){ if(v[j] > 0 && ref[j] == 0) q.push(j); } while(q.size()){ const int pos = q.front(); q.pop(); const int suff = tree.tree[pos].sufflink; if(suff >= 3){ v[suff] += v[pos]; ref[suff]--; if(ref[suff] == 0) q.push(suff); } } } for(int i = 3; i < (int)scnt.size(); i++){ ans += scnt[i] * tcnt[i]; } return ans; } }; typedef PalindromeTree<string, 'a', 'z'> SPalindromeTree; char buff[500000 + 10]; string getStr(){ scanf("%s", buff); return buff; } int main(){ string s = getStr(); string t = getStr(); typedef PalindromeTree<string, 'A' - 2, 'Z'> SPalindromeTree; printf("%lld\n", SPalindromeTree::countSamePalindrome(std::move(s), std::move(t), "@?")); return 0; }