제출 #632503

#제출 시각아이디문제언어결과실행 시간메모리
632503ghostwriter콤보 (IOI18_combo)C++14
100 / 100
33 ms588 KiB
#include "combo.h" #include <bits/stdc++.h> using namespace std; #ifdef LOCAL #include <debug.h> #endif #define st first #define nd second #define pb push_back #define pf push_front #define _pb pop_back #define _pf pop_front #define lb lower_bound #define ub upper_bound #define mtp make_tuple #define all(x) (x).begin(), (x).end() #define sz(x) (int)(x).size() typedef long long ll; typedef unsigned long long ull; typedef double db; typedef long double ldb; typedef pair<int, int> pi; typedef pair<ll, ll> pll; typedef vector<int> vi; typedef vector<ll> vll; typedef vector<pi> vpi; typedef vector<pll> vpll; typedef string str; template<typename T> T gcd(T a, T b) { return (b == 0? a : gcd(b, a % b)); } template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; } #define FOR(i, l, r) for (int (i) = (l); (i) <= (r); ++(i)) #define FOS(i, r, l) for (int (i) = (r); (i) >= (l); --(i)) #define EACH(i, x) for (auto &(i) : (x)) #define WHILE while #define file "TEST" mt19937 rd(chrono::steady_clock::now().time_since_epoch().count()); ll rand(ll l, ll r) { return uniform_int_distribution<ll>(l, r)(rd); } /* Tran The Bao CTL - Da Lat Practising for VOI23 gold medal */ str guess_sequence(int N) { str ans; int pre = press("AB"); if (pre) { pre = press("A"); if (pre) ans.pb('A'); else ans.pb('B'); } else { pre = press("X"); if (pre) ans.pb('X'); else ans.pb('Y'); } if (N == 1) return ans; vi c; if (ans.front() != 'A') c.pb('A'); if (ans.front() != 'B') c.pb('B'); if (ans.front() != 'X') c.pb('X'); if (ans.front() != 'Y') c.pb('Y'); FOR(i, 2, N - 1) { str tmp; tmp += ans; tmp.pb(c[0]); tmp += ans; tmp.pb(c[1]); tmp.pb(c[0]); tmp += ans; tmp.pb(c[1]); tmp.pb(c[1]); tmp += ans; tmp.pb(c[1]); tmp.pb(c[2]); pre = press(tmp); if (pre == i) ans.pb(c[0]); else if (pre == i + 1) ans.pb(c[1]); else ans.pb(c[2]); } str tmp = ans; tmp.pb(c[0]); if (press(tmp) == N) ans = tmp; else { tmp._pb(); tmp.pb(c[1]); if (press(tmp) == N) ans = tmp; else ans.pb(c[2]); } return ans; }

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'str guess_sequence(int)':
combo.cpp:25:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   25 | #define FOR(i, l, r) for (int (i) = (l); (i) <= (r); ++(i))
      |                               ^
combo.cpp:56:2: note: in expansion of macro 'FOR'
   56 |  FOR(i, 2, N - 1) {
      |  ^~~
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