結果
問題 | No.1470 Mex Sum |
ユーザー | kuhaku |
提出日時 | 2023-09-13 14:39:47 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 18 ms / 2,000 ms |
コード長 | 3,654 bytes |
コンパイル時間 | 3,700 ms |
コンパイル使用メモリ | 219,524 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-06-30 23:20:28 |
合計ジャッジ時間 | 6,348 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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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 | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 4 ms
6,940 KB |
testcase_03 | AC | 3 ms
6,944 KB |
testcase_04 | AC | 4 ms
6,944 KB |
testcase_05 | AC | 3 ms
6,940 KB |
testcase_06 | AC | 3 ms
6,940 KB |
testcase_07 | AC | 3 ms
6,940 KB |
testcase_08 | AC | 3 ms
6,940 KB |
testcase_09 | AC | 3 ms
6,944 KB |
testcase_10 | AC | 3 ms
6,944 KB |
testcase_11 | AC | 4 ms
6,944 KB |
testcase_12 | AC | 17 ms
6,944 KB |
testcase_13 | AC | 17 ms
6,940 KB |
testcase_14 | AC | 17 ms
6,940 KB |
testcase_15 | AC | 17 ms
6,940 KB |
testcase_16 | AC | 17 ms
6,944 KB |
testcase_17 | AC | 17 ms
6,944 KB |
testcase_18 | AC | 16 ms
6,944 KB |
testcase_19 | AC | 17 ms
6,940 KB |
testcase_20 | AC | 16 ms
6,940 KB |
testcase_21 | AC | 17 ms
6,944 KB |
testcase_22 | AC | 17 ms
6,944 KB |
testcase_23 | AC | 18 ms
6,940 KB |
testcase_24 | AC | 18 ms
6,944 KB |
testcase_25 | AC | 18 ms
6,944 KB |
testcase_26 | AC | 17 ms
6,940 KB |
testcase_27 | AC | 17 ms
6,940 KB |
testcase_28 | AC | 17 ms
6,944 KB |
testcase_29 | AC | 17 ms
6,944 KB |
testcase_30 | AC | 17 ms
6,944 KB |
testcase_31 | AC | 17 ms
6,940 KB |
testcase_32 | AC | 17 ms
6,940 KB |
testcase_33 | AC | 17 ms
6,940 KB |
testcase_34 | AC | 18 ms
6,944 KB |
testcase_35 | AC | 17 ms
6,940 KB |
testcase_36 | AC | 18 ms
6,940 KB |
testcase_37 | AC | 15 ms
6,944 KB |
testcase_38 | AC | 15 ms
6,944 KB |
testcase_39 | AC | 14 ms
6,940 KB |
testcase_40 | AC | 15 ms
6,940 KB |
testcase_41 | AC | 14 ms
6,944 KB |
testcase_42 | AC | 14 ms
6,940 KB |
testcase_43 | AC | 14 ms
6,944 KB |
testcase_44 | AC | 14 ms
6,944 KB |
testcase_45 | AC | 15 ms
6,940 KB |
testcase_46 | AC | 15 ms
6,940 KB |
testcase_47 | AC | 15 ms
6,944 KB |
testcase_48 | AC | 15 ms
6,944 KB |
testcase_49 | AC | 14 ms
6,940 KB |
testcase_50 | AC | 15 ms
6,940 KB |
ソースコード
#line 1 "a.cpp" #define PROBLEM "https://yukicoder.me/problems/no/1470" #line 2 "/home/kuhaku/atcoder/github/algo/lib/template/template.hpp" #pragma GCC target("sse4.2,avx2,bmi2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include <bits/stdc++.h> template <class T, class U> bool chmax(T &a, const U &b) { return a < (T)b ? a = (T)b, true : false; } template <class T, class U> bool chmin(T &a, const U &b) { return (T)b < a ? a = (T)b, true : false; } constexpr std::int64_t INF = 1000000000000000003; constexpr int Inf = 1000000003; constexpr int MOD = 1000000007; constexpr int MOD_N = 998244353; constexpr double EPS = 1e-7; constexpr double PI = M_PI; #line 3 "/home/kuhaku/atcoder/github/algo/lib/template/macro.hpp" #define FOR(i, m, n) for (int i = (m); i < int(n); ++i) #define FORR(i, m, n) for (int i = (m)-1; i >= int(n); --i) #define FORL(i, m, n) for (int64_t i = (m); i < int64_t(n); ++i) #define rep(i, n) FOR (i, 0, n) #define repn(i, n) FOR (i, 1, n + 1) #define repr(i, n) FORR (i, n, 0) #define repnr(i, n) FORR (i, n + 1, 1) #define all(s) (s).begin(), (s).end() #line 3 "/home/kuhaku/atcoder/github/algo/lib/template/sonic.hpp" struct Sonic { Sonic() { std::ios::sync_with_stdio(false); std::cin.tie(nullptr); } constexpr void operator()() const {} } sonic; #line 5 "/home/kuhaku/atcoder/github/algo/lib/template/atcoder.hpp" using namespace std; using ll = std::int64_t; using ld = long double; template <class T, class U> std::istream &operator>>(std::istream &is, std::pair<T, U> &p) { return is >> p.first >> p.second; } template <class T> std::istream &operator>>(std::istream &is, std::vector<T> &v) { for (T &i : v) is >> i; return is; } template <class T, class U> std::ostream &operator<<(std::ostream &os, const std::pair<T, U> &p) { return os << '(' << p.first << ',' << p.second << ')'; } template <class T> std::ostream &operator<<(std::ostream &os, const std::vector<T> &v) { for (auto it = v.begin(); it != v.end(); ++it) { os << (it == v.begin() ? "" : " ") << *it; } return os; } template <class Head, class... Tail> void co(Head &&head, Tail &&...tail) { if constexpr (sizeof...(tail) == 0) std::cout << head << '\n'; else std::cout << head << ' ', co(std::forward<Tail>(tail)...); } template <class Head, class... Tail> void ce(Head &&head, Tail &&...tail) { if constexpr (sizeof...(tail) == 0) std::cerr << head << '\n'; else std::cerr << head << ' ', ce(std::forward<Tail>(tail)...); } template <typename T, typename... Args> auto make_vector(T x, int arg, Args... args) { if constexpr (sizeof...(args) == 0) return std::vector<T>(arg, x); else return std::vector(arg, make_vector<T>(x, args...)); } void setp(int n) { std::cout << std::fixed << std::setprecision(n); } void Yes(bool is_correct = true) { std::cout << (is_correct ? "Yes" : "No") << '\n'; } void No(bool is_not_correct = true) { Yes(!is_not_correct); } void YES(bool is_correct = true) { std::cout << (is_correct ? "YES" : "NO") << '\n'; } void NO(bool is_not_correct = true) { YES(!is_not_correct); } void Takahashi(bool is_correct = true) { std::cout << (is_correct ? "Takahashi" : "Aoki") << '\n'; } void Aoki(bool is_not_correct = true) { Takahashi(!is_not_correct); } #line 3 "a.cpp" int main(void) { int n; cin >> n; vector<int> a(n); cin >> a; ll c[2] = {}; rep (i, n) { if (a[i] <= 2) c[a[i] - 1]++; } ll ans = (ll)n * (n - 1) / 2; ans += c[0] * (n - 1) - c[0] * (c[0] - 1) / 2; ans += c[0] * c[1]; co(ans); return 0; }