제출 #945568

#제출 시각아이디문제언어결과실행 시간메모리
945568Syrius콤보 (IOI18_combo)C++14
100 / 100
14 ms1824 KiB
#include <bits/stdc++.h> #include "combo.h" using namespace std; // #define int long long #define pint pair < int , int > #define ll long long #define ff first #define ss second #define fast ios_base::sync_with_stdio(NULL); cin.tie(NULL) const int inf = 1e9 + 9; const int mxn = 2e5 + 2; const int mod = 1e9 + 7; // int press(string p) {} string guess_sequence(int n) { int t1 = press("AB"); int t2 = press("BX"); char a , b , c , z; if (t1 == 0) { a = 'A'; b = 'B'; if (t2 == 0) { z = 'Y'; c = 'X'; } else { z = 'X'; c = 'Y'; } } else { c = 'Y'; b = 'X'; if (t2 == 0) { a = 'B'; z = 'A'; } else { a = 'A'; z = 'B'; } } string str; str = z; if (n == 1) return str; for (int i = 0; i < n-2; i++) { int t = press(str + a + str + b + a + str + b + b + str + b + c); int sz = str.size(); if (t - sz == 0) str += c; if (t - sz == 1) str += a; if (t - sz == 2) str += b; } if (press(str + a) == n) str += a; else if (press(str + b) == n) str += b; else str += c; return str; }
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