結果
問題 | No.2925 2-Letter Shiritori |
ユーザー | loop0919 |
提出日時 | 2024-09-13 16:58:32 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 60 ms / 2,000 ms |
コード長 | 2,699 bytes |
コンパイル時間 | 1,391 ms |
コンパイル使用メモリ | 108,776 KB |
実行使用メモリ | 25,452 KB |
平均クエリ数 | 26.00 |
最終ジャッジ日時 | 2024-10-12 14:00:57 |
合計ジャッジ時間 | 2,976 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 | 60 ms
24,556 KB |
testcase_01 | AC | 57 ms
24,812 KB |
testcase_02 | AC | 56 ms
25,196 KB |
testcase_03 | AC | 57 ms
25,196 KB |
testcase_04 | AC | 56 ms
24,812 KB |
testcase_05 | AC | 57 ms
25,452 KB |
testcase_06 | AC | 55 ms
25,452 KB |
testcase_07 | AC | 55 ms
25,184 KB |
testcase_08 | AC | 58 ms
24,940 KB |
testcase_09 | AC | 56 ms
25,196 KB |
testcase_10 | AC | 57 ms
25,196 KB |
testcase_11 | AC | 57 ms
25,196 KB |
ソースコード
#include <iostream> #include <string> #include <set> #include <map> #include <vector> using namespace std; int main() { char alpha; cin >> alpha; cin.ignore(); // Consume any remaining newline character // Initialize used strings set<string> used_strings; // Initialize all possible strings starting with each letter map<char, set<string>> strings_starting_with; for (char c1 = 'a'; c1 <= 'z'; ++c1) { for (char c2 = 'a'; c2 <= 'z'; ++c2) { string s; s += c1; s += c2; strings_starting_with[c1].insert(s); } } // Our initial move string first_move; first_move += alpha; first_move += alpha; cout << "? " << first_move << endl; used_strings.insert(first_move); strings_starting_with[alpha].erase(first_move); while (true) { string judge_output; getline(cin, judge_output); if (judge_output == "! WIN" || judge_output == "! LOSE") { // Game over break; } if (judge_output.substr(0, 2) == "? ") { string T = judge_output.substr(2); // Add T to used strings used_strings.insert(T); strings_starting_with[T[0]].erase(T); // Our turn char c = T[1]; // Second character of T // Try to use c followed by alpha string our_move; our_move += c; our_move += alpha; if (used_strings.find(our_move) == used_strings.end()) { // Our desired move is unused } else { // Find any unused string starting with c if (strings_starting_with[c].empty()) { // No moves left, but according to the problem, we should always be able to move // However, to be safe, we can output any valid move // But since the first player can always win, this should not happen // To be safe, let's pick any unused string starting with c cout << "! LOSE" << endl; break; } else { // Get any unused string starting with c our_move = *strings_starting_with[c].begin(); } } // Output our move cout << "? " << our_move << endl; cout.flush(); // Add our move to used strings used_strings.insert(our_move); strings_starting_with[our_move[0]].erase(our_move); } else { // Unexpected output from judge break; } } return 0; }