#792429 (C++17) No.2056 非力なレッド

• 問題: No.2056 非力なレッド
• ユーザー: Daylight
• 提出日時: 2022-08-26 21:28:50
• 言語: C++17 (gcc 13.3.0 + boost 1.87.0)
• 結果: AC
• 実行時間: 26 ms / 2,000 ms
• コード長: 2,057 bytes
• コンパイル時間: 1,936 ms
• コンパイル使用メモリ: 194,668 KB
• 最終ジャッジ日時: 2025-01-31 04:17:17
• ジャッジサーバーID （参考情報）: judge5 / judge5

ファイルパターン	結果
sample	AC * 3
other	AC * 38

ソースコード

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#include <bits/stdc++.h>
using namespace std;
#define SZ(x) (int) (x).size()
#define REP(i, n) for(int i = 0; i < (n); i++)
#define FOR(i, a, b) for(int i = (a); i < (b); i++)
#define REPR(i, n) for(int i = (n) -1; i >= 0; i--)
#define ALL(s) (s).begin(), (s).end()
#define so(V) sort(ALL(V))
#define rev(V) reverse(ALL(V))
#define uni(v) v.erase(unique(ALL(v)), (v).end())
typedef long long unsigned int llu;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<bool> vb;
typedef vector<vi> vvi;
const double EPS = 1e-9;
const int MOD = 1e9 + 7;
const int INF = (1 << 29);
const ll LINF = 1e18;
const double PI = acos(-1);
template<typename T>
vector<T> make_v(size_t a) {
    return vector<T>(a);
}
template<typename T, typename... Ts>
auto make_v(size_t a, Ts... ts) {
    return vector<decltype(make_v<T>(ts...))>(
        a, make_v<T>(ts...));
}
template<typename T, typename V>
typename enable_if<is_class<T>::value == 0>::type fill_v(
    T& t, const V& v) {
    t = v;
}
template<typename T, typename V>
typename enable_if<is_class<T>::value != 0>::type fill_v(
    T& t, const V& v) {
    for(auto& e: t) fill_v(e, v);
}
template<class T>
bool chmax(T& a, const T& b) {
    if(a < b) {
        a = b;
        return true;
    }
    return false;
}
template<class T>
bool chmin(T& a, const T& b) {
    if(a > b) {
        a = b;
        return true;
    }
    return false;
}
template<typename S, typename T>
istream& operator>>(istream& is, pair<S, T>& p) {
    cin >> p.first >> p.second;
    return is;
}
template<typename T>
istream& operator>>(istream& is, vector<T>& vec) {
    for(T& x: vec) is >> x;
    return is;
}
template<typename T>
ostream& operator<<(ostream& os, vector<T>& vec) {
    REP(i, SZ(vec)) {
        if(i != 0) os << " ";
        os << vec[i];
    }
    return os;
}
int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    ll N, X, M;
    cin >> N >> X >> M;
    vll A(N);
    cin >> A;
    ll cur = 1;
    REPR(i, N) {
        while(M >= 0 && A[i] / cur >= X) {
            cur *= 2;
            M -= i + 1;
        }
        if(M < 0) {
            cout << "No" << endl;
            return 0;
        }
    }
    cout << "Yes" << endl;
    return 0;
}
 
 
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