結果
| 問題 | 
                            No.2480 Sequence Sum
                             | 
                    
| コンテスト | |
| ユーザー | 
                             | 
                    
| 提出日時 | 2023-09-22 22:19:45 | 
| 言語 | C++14  (gcc 13.3.0 + boost 1.87.0)  | 
                    
| 結果 | 
                             
                                AC
                                 
                             
                            
                         | 
                    
| 実行時間 | 2 ms / 500 ms | 
| コード長 | 4,056 bytes | 
| コンパイル時間 | 1,588 ms | 
| コンパイル使用メモリ | 169,436 KB | 
| 実行使用メモリ | 5,376 KB | 
| 最終ジャッジ日時 | 2024-07-26 14:39:37 | 
| 合計ジャッジ時間 | 2,205 ms | 
| 
                            ジャッジサーバーID (参考情報)  | 
                        judge5 / judge2 | 
(要ログイン)
| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 2 | 
| other | AC * 13 | 
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define double long double
using ll = long long;
using ull = unsigned long long;
using VB = vector<bool>;
using VVB = vector<VB>;
using VVVB = vector<VVB>;
using VC = vector<char>;
using VVC = vector<VC>;
using VI = vector<int>;
using VVI = vector<VI>;
using VVVI = vector<VVI>;
using VVVVI = vector<VVVI>;
using VL = vector<ll>;
using VVL = vector<VL>;
using VVVL = vector<VVL>;
using VVVVL = vector<VVVL>;
using VVVVVL = vector<VVVVL>;
using VD = vector<double>;
using VVD = vector<VD>;
using VVVD = vector<VVD>;
//using P = pair<int, int>;
#define REP(i, n) for (ll i = 0; i < (int)(n); i++)
#define FOR(i, a, b) for (ll i = a; i < (ll)(b); i++)
#define ALL(a) (a).begin(),(a).end()
constexpr int INF = 1001001001;
constexpr ll LINF = 1001001001001001001ll;
constexpr int DX[] = {1, 0, -1, 0};
constexpr int DY[] = {0, 1, 0, -1};
template< typename T1, typename T2>
inline bool chmax(T1 &a, T2 b) {return a < b && (a = b, true); }
template< typename T1, typename T2>
inline bool chmin(T1 &a, T2 b) {return a > b && (a = b, true); }
const ll MOD = 998244353;
//const ll MOD = 1000000007;
const int MAX_N = 400010;
int par[MAX_N];
int rnk[MAX_N];
int siz[MAX_N];
void init(int n) {
    REP(i,n) {
        par[i] = i;
        rnk[i] = 0;
        siz[i] = 1;
    }
}
int find(int x) {
    if (par[x] == x) {
        return x;
    } else {
        return par[x] = find(par[x]);
    }
}
void unite(int x, int y) {
    x = find(x);
    y = find(y);
    if (x == y) return;
    int s = siz[x] + siz[y];
    if (rnk[x] < rnk[y]) {
        par[x] = y;
    } else {
        par[y] = x;
        if (rnk[x] == rnk[y]) rnk[x]++;
    }
    siz[find(x)] = s;
}
bool same(int x, int y) {
    return find(x) == find(y);
}
int size(int x) {
    return siz[find(x)];
}
ll mod_pow(ll x, ll n, ll mod) {
    ll res = 1;
    x %= mod;
    while (n > 0) {
        if (n & 1) res = res * x % mod;
        x = x * x % mod;
        n >>= 1;
    }
    return res;
}
ll gcd(ll x, ll y) {
    if (y == 0) return x;
    return gcd(y, x % y);
}
/*
typedef pair<ll, int> P0;
struct edge { int to; ll cost; };
const int MAX_V = 200000;
//const ll LINF = 1LL<<60;
int V;
vector<edge> G[MAX_V];
ll d[MAX_V];
void dijkstra(ll s) {
    priority_queue<P0, vector<P0>, greater<P0> > que;
    fill(d, d + V, LINF);
    d[s] = 0;
    que.push(P0(0, s));
    while (!que.empty()) {
        P0 p = que.top(); que.pop();
        int v = p.second;
        if (d[v] < p.first) continue;
        for (edge e : G[v]) {
            if (d[e.to] > d[v] + e.cost) {
                d[e.to] = d[v] + e.cost;
                que.push(P0(d[e.to], e.to));
            }
        }
    }
}
*/
/*
double EPS = 1e-10;
double add(double a, double b) {
    if (abs(a + b) < EPS * (abs(a) + abs(b))) return 0;
    return a + b;
}
struct P {
    double x, y;
    P() {}
    P(double x, double y) : x(x), y(y) {
    }
    P operator + (P p) {
        return P(add(x, p.x), add(y, p.y));
    }
    P operator - (P p) {
        return P(add(x, -p.x), add(y, -p.y));
    }
    P operator * (double d) {
        return P(x * d, y * d);
    }
    double dot(P p) {
        return add(x * p.x, y * p.y);
    }
    double det(P p) {
        return add(x * p.y, -y * p.x);
    }
};
bool on_seg(P p1, P p2, P q) {
    return ()
}
P intersection(P p1, P p2, P q1, P q2) {
    return p1 + (p2 - p1) * ((q2 - q1).det(q1 - p1) / (q2 - q1).det(p2 - p1));
}
*/
/*
VL f(400010, 1);
ll C(ll n, ll k) {
    return f[n] * mod_pow(f[k], MOD - 2, MOD) % MOD * mod_pow(f[n - k], MOD - 2, MOD) % MOD;
}
*/
bool fcomp(const VL& a, const VL& b) {
    if (a[0] * (b[0] + b[1]) > b[0] * (a[0] + a[1])) return true;
    if (a[0] * (b[0] + b[1]) < b[0] * (a[0] + a[1])) return false;
    return a[2] < b[2];
}
int main() {
    ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    ll n;
    cin >> n;
    ll ans = n;
    for (ll i = 1; i * i <= n; i++) {
        if (n % i) continue;
        ans--;
        if (n / i != i) ans--;
    }
    cout << ans << endl;
}