結果

問題 No.1260 たくさんの多項式
ユーザー heno239heno239
提出日時 2020-10-16 22:10:06
言語 C++14
(gcc 13.2.0 + boost 1.83.0)
結果
AC  
実行時間 106 ms / 2,000 ms
コード長 3,774 bytes
コンパイル時間 1,615 ms
コンパイル使用メモリ 120,364 KB
実行使用メモリ 36,356 KB
最終ジャッジ日時 2023-09-28 03:22:23
合計ジャッジ時間 7,828 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(β)

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 36 ms
36,144 KB
testcase_01 AC 37 ms
36,284 KB
testcase_02 AC 37 ms
36,156 KB
testcase_03 AC 38 ms
36,188 KB
testcase_04 AC 38 ms
36,216 KB
testcase_05 AC 38 ms
36,156 KB
testcase_06 AC 36 ms
36,352 KB
testcase_07 AC 37 ms
36,136 KB
testcase_08 AC 36 ms
36,280 KB
testcase_09 AC 37 ms
36,176 KB
testcase_10 AC 37 ms
36,144 KB
testcase_11 AC 37 ms
36,128 KB
testcase_12 AC 37 ms
36,144 KB
testcase_13 AC 37 ms
36,148 KB
testcase_14 AC 37 ms
36,280 KB
testcase_15 AC 37 ms
36,136 KB
testcase_16 AC 38 ms
36,152 KB
testcase_17 AC 37 ms
36,192 KB
testcase_18 AC 38 ms
36,224 KB
testcase_19 AC 37 ms
36,148 KB
testcase_20 AC 102 ms
36,212 KB
testcase_21 AC 57 ms
36,156 KB
testcase_22 AC 94 ms
36,188 KB
testcase_23 AC 84 ms
36,292 KB
testcase_24 AC 85 ms
36,140 KB
testcase_25 AC 75 ms
36,356 KB
testcase_26 AC 81 ms
36,128 KB
testcase_27 AC 71 ms
36,296 KB
testcase_28 AC 98 ms
36,144 KB
testcase_29 AC 85 ms
36,156 KB
testcase_30 AC 66 ms
36,280 KB
testcase_31 AC 82 ms
36,128 KB
testcase_32 AC 82 ms
36,152 KB
testcase_33 AC 75 ms
36,152 KB
testcase_34 AC 98 ms
36,284 KB
testcase_35 AC 65 ms
36,284 KB
testcase_36 AC 60 ms
36,136 KB
testcase_37 AC 85 ms
36,132 KB
testcase_38 AC 88 ms
36,152 KB
testcase_39 AC 98 ms
36,352 KB
testcase_40 AC 83 ms
36,280 KB
testcase_41 AC 97 ms
36,144 KB
testcase_42 AC 81 ms
36,140 KB
testcase_43 AC 98 ms
36,132 KB
testcase_44 AC 79 ms
36,132 KB
testcase_45 AC 78 ms
36,216 KB
testcase_46 AC 74 ms
36,212 KB
testcase_47 AC 80 ms
36,132 KB
testcase_48 AC 48 ms
36,140 KB
testcase_49 AC 71 ms
36,132 KB
testcase_50 AC 53 ms
36,276 KB
testcase_51 AC 98 ms
36,128 KB
testcase_52 AC 58 ms
36,192 KB
testcase_53 AC 64 ms
36,148 KB
testcase_54 AC 102 ms
36,144 KB
testcase_55 AC 105 ms
36,136 KB
testcase_56 AC 71 ms
36,144 KB
testcase_57 AC 83 ms
36,128 KB
testcase_58 AC 65 ms
36,140 KB
testcase_59 AC 84 ms
36,140 KB
testcase_60 AC 106 ms
36,128 KB
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 #

#pragma GCC optimize("Ofast")
#pragma GCC target ("sse4")

#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<unordered_set>
#include<utility>
#include<cassert>
#include<complex>
#include<numeric>
#include<array>
using namespace std;

//#define int long long
typedef long long ll;

typedef unsigned long long ul;
typedef unsigned int ui;
constexpr ll mod = 1000000007;
const ll INF = mod * mod;
typedef pair<int, int>P;
#define stop char nyaa;cin>>nyaa;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
#define all(v) (v).begin(),(v).end()
typedef pair<ll, ll> LP;
typedef long double ld;
typedef pair<ld, ld> LDP;
const ld eps = 1e-12;
const ld pi = acosl(-1.0);

ll mod_pow(ll x, ll n, ll m = mod) {
    ll res = 1;
    while (n) {
        if (n & 1)res = res * x % m;
        x = x * x % m; n >>= 1;
    }
    return res;
}
struct modint {
    ll n;
    modint() :n(0) { ; }
    modint(ll m) :n(m) {
        if (n >= mod)n %= mod;
        else if (n < 0)n = (n % mod + mod) % mod;
    }
    operator int() { return n; }
};
bool operator==(modint a, modint b) { return a.n == b.n; }
modint operator+=(modint& a, modint b) { a.n += b.n; if (a.n >= mod)a.n -= mod; return a; }
modint operator-=(modint& a, modint b) { a.n -= b.n; if (a.n < 0)a.n += mod; return a; }
modint operator*=(modint& a, modint b) { a.n = ((ll)a.n * b.n) % mod; return a; }
modint operator+(modint a, modint b) { return a += b; }
modint operator-(modint a, modint b) { return a -= b; }
modint operator*(modint a, modint b) { return a *= b; }
modint operator^(modint a, ll n) {
    if (n == 0)return modint(1);
    modint res = (a * a) ^ (n / 2);
    if (n % 2)res = res * a;
    return res;
}

ll inv(ll a, ll p) {
    return (a == 1 ? 1 : (1 - p * inv(p % a, a)) / a + p);
}
modint operator/(modint a, modint b) { return a * modint(inv(b, mod)); }

const int max_n = 1 << 21;
modint fact[max_n], factinv[max_n];
void init_f() {
    fact[0] = modint(1);
    for (int i = 0; i < max_n - 1; i++) {
        fact[i + 1] = fact[i] * modint(i + 1);
    }
    factinv[max_n - 1] = modint(1) / fact[max_n - 1];
    for (int i = max_n - 2; i >= 0; i--) {
        factinv[i] = factinv[i + 1] * modint(i + 1);
    }
}
modint comb(int a, int b) {
    if (a < 0 || b < 0 || a < b)return 0;
    return fact[a] * factinv[b] * factinv[a - b];
}

void solve() {
    ll n; cin >> n;
    ll le = 0;
    modint ans = 0;
    for (ll i = 2; i <= n; i++) {
        if (i * i > n) {
            le = i; break;
        }
        ll cop = n;
        while (cop > 0) {
            ans += cop % i; cop /= i;
        }
    }
   //cout << ans << "\n";
    auto calc = [&](ll r)->modint {
        return (modint)r * (modint)(r + 1) * (modint)((1 + mod) / 2);
    };
    for (ll i = 1; i <= n; i++) {
        if (i * i >= n)break;
        ll l = n / (i + 1);
        ll r = n / i;
        l = max(l, le - 1);
        //(l,r]
        modint sum = calc(r) - calc(l);
        sum -= r - l;
        modint al = (modint)(r - l) * (modint)n;
        ans += al-sum * (modint)i;

        //cout << l << " " << r << " " << i << " "<<sum << " " << al << "\n";
    }
    cout << ans << "\n";
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    //cout << fixed << setprecision(15);
    init_f();
    //init();
    //expr();
    //int t; cin >> t; rep(i, t)
    solve();
    return 0;
}
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