Submission #1316056

#TimeUsernameProblemLanguageResultExecution timeMemory
1316056otariusCombo (IOI18_combo)C++20
100 / 100
9 ms544 KiB
#include "combo.h" #include <bits/stdc++.h> #include <bits/extc++.h> using namespace __gnu_pbds; using namespace std; // #pragma GCC optimize("Ofast") // #pragma GCC optimize ("unroll-loops") // #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") #define ff first #define sc second #define pb push_back #define ll long long #define pll pair<ll, ll> #define pii pair<int, int> #define ull unsigned long long #define all(x) (x).begin(),(x).end() #define rall(x) (x).rbegin(),(x).rend() mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); mt19937_64 rngl(chrono::steady_clock::now().time_since_epoch().count()); // #define int long long // #define int unsigned long long // #define ordered_set(T) tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update> // #define ordered_multiset(T) tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update> const ll mod = 1e9 + 7; // const ll mod = 998244353; const ll inf = 1e9; const ll biginf = 1e18; const int maxN = 4 * 1e5 + 15; // namespace { // constexpr int MAX_N = 2000; // constexpr int MAX_NUM_MOVES = 8000; // int N; // std::string S; // int num_moves; // void wrong_answer(const char *MSG) { // printf("Wrong Answer: %s\n", MSG); // exit(0); // } // } // namespace // int press(std::string p) { // cout << p << '\n'; // if (++num_moves > MAX_NUM_MOVES) { // wrong_answer("too many moves"); // } // int len = p.length(); // if (len > 4 * N) { // cout << p; wrong_answer("invalid press"); // } // for (int i = 0; i < len; ++i) { // if (p[i] != 'A' && p[i] != 'B' && p[i] != 'X' && p[i] != 'Y') { // cout << p; wrong_answer("invalid press"); // } // } // int coins = 0; // for (int i = 0, j = 0; i < len; ++i) { // if (j < N && S[j] == p[i]) { // ++j; // } else if (S[0] == p[i]) { // j = 1; // } else { // j = 0; // } // coins = std::max(coins, j); // } // return coins; // } string guess_sequence(int n) { string s, ans; int ret = press("AB"); if (ret == 2) ans += "AB"; else if (ret == 1) { ret = press("A"); if (ret == 1) ans += "A"; else ans += "B"; } else { ret = press("X"); if (ret == 1) ans += "X"; else ans += "Y"; } if (ans.size() == n) return ans; vector<string> vec; if (ans[0] != 'A') vec.pb("A"); if (ans[0] != 'B') vec.pb("B"); if (ans[0] != 'X') vec.pb("X"); if (ans[0] != 'Y') vec.pb("Y"); while (ans.size() + 1 < n) { s = ans + vec[0] + ans + vec[1] + vec[0] + ans + vec[1] + vec[1] + ans + vec[1] + vec[2]; int ret = press(s); if (ret == (int)ans.size()) ans += vec[2]; if (ret == (int)ans.size() + 1) ans += vec[0]; if (ret == (int)ans.size() + 2) ans += vec[1]; } if (press(ans + vec[0]) == n) ans += vec[0]; else if (press(ans + vec[1]) == n) ans += vec[1]; else ans += vec[2]; return ans; } // int main() { // char buffer[MAX_N + 1]; // if (scanf("%s", buffer) != 1) { // fprintf(stderr, "Error while reading input\n"); // exit(1); // } // S = buffer; // N = S.length(); // num_moves = 0; // std::string answer = guess_sequence(N); // if (answer != S) { // cout << answer; // wrong_answer("wrong guess"); // exit(0); // } // printf("Accepted: %d\n", num_moves); // return 0; // }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...