結果

問題 No.1022 Power Equation
ユーザー satashun
提出日時 2020-11-19 04:33:59
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 8 ms / 2,000 ms
コード長 2,461 bytes
コンパイル時間 2,055 ms
コンパイル使用メモリ 191,652 KB
最終ジャッジ日時 2025-01-16 01:39:15
ジャッジサーバーID
（参考情報） 		judge5 / judge1
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ファイルパターン 結果
sample AC * 1
other AC * 8
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
template <class T>
using V = vector<T>;
template <class T>
using VV = V<V<T>>;
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define fi first
#define se second
#define rep(i, n) rep2(i, 0, n)
#define rep2(i, m, n) for (int i = m; i < (n); i++)
#define per(i, b) per2(i, 0, b)
#define per2(i, a, b) for (int i = int(b) - 1; i >= int(a); i--)
#define ALL(c) (c).begin(), (c).end()
#define SZ(x) ((int)(x).size())
constexpr ll TEN(int n) { return (n == 0) ? 1 : 10 * TEN(n - 1); }
template <class T, class U>
void chmin(T& t, const U& u) {
    if (t > u) t = u;
}
template <class T, class U>
void chmax(T& t, const U& u) {
    if (t < u) t = u;
}
template <class T, class U>
ostream& operator<<(ostream& os, const pair<T, U>& p) {
    os << "(" << p.first << "," << p.second << ")";
    return os;
}
template <class T>
ostream& operator<<(ostream& os, const vector<T>& v) {
    os << "{";
    rep(i, v.size()) {
        if (i) os << ",";
        os << v[i];
    }
    os << "}";
    return os;
}
#ifdef LOCAL
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
    cerr << " " << H;
    debug_out(T...);
}
#define debug(...) \
    cerr << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif
void solve() {
    int N;
    cin >> N;
    ll ans = (ll)N * N;
    for (int b = 1; b < 30; ++b) {
        for (int d = 1; d < 30; ++d) {
            // b=b*g,d=d*g
            if (__gcd(b, d) != 1) continue;
            int mx = max(b, d);
            ll lo = 1, hi = N + 1;
            while (hi - lo > 1) {
                ll m = (lo + hi) / 2;
                bool f = true;
                ll x = 1;
                rep(_, mx) {
                    x *= m;
                    if (x > N) {
                        f = 0;
                        break;
                    }
                }
                if (f)
                    lo = m;
                else
                    hi = m;
            }
            ans += ll(N / mx) * (lo - 1);
        }
    }
    cout << ans << endl;
}
int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int TC;
    cin >> TC;
    while (TC--) solve();
    return 0;
}
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