結果

問題 No.2126 MEX Game
ユーザー miscalcmiscalc
提出日時 2022-11-18 22:24:48
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 2,476 bytes
コンパイル時間 4,187 ms
コンパイル使用メモリ 263,684 KB
実行使用メモリ 5,304 KB
最終ジャッジ日時 2023-10-20 07:16:56
合計ジャッジ時間 5,537 ms
ジャッジサーバーID
(参考情報)
judge15 / judge12
このコードへのチャレンジ
(要ログイン)

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 2 ms
4,520 KB
testcase_01 AC 2 ms
4,520 KB
testcase_02 AC 2 ms
4,520 KB
testcase_03 AC 2 ms
4,520 KB
testcase_04 AC 3 ms
4,520 KB
testcase_05 WA -
testcase_06 AC 2 ms
4,520 KB
testcase_07 WA -
testcase_08 WA -
testcase_09 AC 2 ms
4,520 KB
testcase_10 WA -
testcase_11 AC 30 ms
5,304 KB
testcase_12 WA -
testcase_13 WA -
testcase_14 WA -
testcase_15 AC 30 ms
5,304 KB
testcase_16 AC 30 ms
5,288 KB
testcase_17 AC 25 ms
5,288 KB
testcase_18 AC 27 ms
5,304 KB
testcase_19 AC 18 ms
5,304 KB
testcase_20 AC 18 ms
5,304 KB
testcase_21 WA -
testcase_22 AC 3 ms
4,520 KB
testcase_23 AC 3 ms
4,520 KB
testcase_24 WA -
testcase_25 WA -
testcase_26 WA -
testcase_27 WA -
testcase_28 WA -
testcase_29 WA -
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function 'int main()':
main.cpp:55:9: warning: 'x' may be used uninitialized [-Wmaybe-uninitialized]
   55 |   cnt.at(x)++;
      |   ~~~~~~^~~
main.cpp:48:6: note: 'x' was declared here
   48 |   ll x;
      |      ^

ソースコード

diff #

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using pll = pair<ll, ll>;
using tlll = tuple<ll, ll, ll>;
constexpr ll INF = 1LL << 60;
template<class T> bool chmin(T& a, T b) {if (a > b) {a = b; return true;} return false;}
template<class T> bool chmax(T& a, T b) {if (a < b) {a = b; return true;} return false;}
ll safemod(ll A, ll M) {ll res = A % M; if (res < 0) res += M; return res;}
ll divfloor(ll A, ll B) {if (B < 0) A = -A, B = -B; return (A - safemod(A, B)) / B;}
ll divceil(ll A, ll B) {if (B < 0) A = -A, B = -B; return divfloor(A + B - 1, B);}
ll pow_ll(ll A, ll B) {if (A == 0 || A == 1) {return A;} if (A == -1) {return B & 1 ? -1 : 1;} ll res = 1; for (int i = 0; i < B; i++) {res *= A;} return res;}
ll logfloor(ll A, ll B) {assert(A >= 2); ll res = 0; for (ll tmp = 1; tmp <= B / A; tmp *= A) {res++;} return res;}
ll logceil(ll A, ll B) {assert(A >= 2); ll res = 0; for (ll tmp = 1; tmp < B; tmp *= A) {res++;} return res;}
ll arisum_ll(ll a, ll d, ll n) { return n * a + (n & 1 ? ((n - 1) >> 1) * n : (n >> 1) * (n - 1)) * d; }
ll arisum2_ll(ll a, ll l, ll n) { return n & 1 ? ((a + l) >> 1) * n : (n >> 1) * (a + l); }
ll arisum3_ll(ll a, ll l, ll d) { assert((l - a) % d == 0); return arisum2_ll(a, l, (l - a) / d + 1); }
template<class T> void unique(vector<T> &V) {V.erase(unique(V.begin(), V.end()), V.end());}
template<class T> void sortunique(vector<T> &V) {sort(V.begin(), V.end()); V.erase(unique(V.begin(), V.end()), V.end());}
#define FINALANS(A) do {cout << (A) << '\n'; exit(0);} while (false)
template<class T> void printvec(const vector<T> &V) {int _n = V.size(); for (int i = 0; i < _n; i++) cout << V[i] << (i == _n - 1 ? "" : " ");cout << '\n';}
template<class T> void printvect(const vector<T> &V) {for (auto v : V) cout << v << '\n';}
template<class T> void printvec2(const vector<vector<T>> &V) {for (auto &v : V) printvec(v);}
//*
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
//using mint = modint1000000007;
//using mint = modint;
//*/

int main()
{
  ll N;
  cin >> N;
  vector<ll> A(N);
  for (ll i = 0; i < N; i++)
  {
    cin >> A.at(i);
  }

  const ll M = 100010;
  vector<ll> cnt(M, 0);
  for (auto a : A)
    cnt.at(a)++;

  ll x;
  for (ll i = 0; i < M; i++)
  {
    if (cnt.at(i) <= 1)
      x = i;
  }
  cnt.at(*max_element(A.begin(), A.end()))--;
  cnt.at(x)++;
  for (ll i = 0; i < M; i++)
  {
    if (cnt.at(i) <= 1)
      FINALANS(i);
  }
}
0