結果
問題 | No.278 連続する整数の和(2) |
ユーザー |
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提出日時 | 2020-04-04 07:39:01 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 15 ms / 2,000 ms |
コード長 | 2,531 bytes |
コンパイル時間 | 1,292 ms |
コンパイル使用メモリ | 114,752 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-07-03 06:59:59 |
合計ジャッジ時間 | 1,825 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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ファイルパターン | 結果 |
---|---|
other | AC * 18 |
ソースコード
#include <algorithm>#include <bitset>#include <cassert>#include <cmath>#include <ctime>#include <cstring>#include <functional>#include <iostream>#include <iomanip>#include <limits>#include <list>#include <map>#include <queue>#include <set>#include <stack>#include <string>#include <regex>#include <vector>#define fix(n) cout<<fixed<<setprecision(n)#define rep(i,n) for (int i = 0; i < (n); ++i)#define all(a) (a).begin(), (a).end()#define sort(a) sort(all(a))#define uniq(a) sort(a);(a).erase(unique(all(a)), (a).end())#define reverse(a) reverse(all(a))#define ctos(c) string(1, (c))#define out(d) cout << (d)#define outl(d) std::cout<<(d)<<"\n"#define YES() cout << "YES" << endl#define NO() cout << "NO" << endl#define Yes() cout << "Yes" << endl#define No() cout << "No" << endl#define ceil(x, y) ((x + y - 1) / (y))#define debug(x) cerr << #x << ": " << (x) << '\n'#define debug2(x, y) cerr << #x << ": " << (x) << ", " << #y << ": " << (y) << '\n'#define debug3(x, y, z) cerr << #x << ": " << (x) << ", " << #y << ": " << (y) << ", " << #z << ": " << (z) << '\n'#define dbg(v) for (size_t _ = 0; _ < v.size(); ++_){ cerr << #v << "[" << _ << "] : " << v[_] << '\n'; }#define pb push_back#define fst first#define int long long#define INF __LONG_LONG_MAX__using namespace std;using ll = long long;using ld = long double;using P = pair<ll,ll>;const ll MOD = 1000000007; // 10^9 + 7const int dx[8] = {1, 0, -1, 0, 1, -1, -1, 1};const int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};vector<P> factor(ll n) {vector<P> ret;ll q = n;for (ll d = 2; d * d <= n; d++) {if (q % d > 0) continue;ll cnt = 0;while (q % d == 0) {cnt++;q /= d;}ret.push_back(make_pair(d, cnt));}if (q > 1) ret.push_back(make_pair(q, 1));return ret;}ll mypow(ll x, ll n) {ll res = 1;while (n > 0) {if (n & 1) res = res * x;x = x * x;n >>= 1;}return res;}void solve() {ll N; cin >> N;ll g = N % 2 == 0 ? N / 2 : N;vector<P> v = factor(g);ll ans = 1;for (P vi : v) {ll p = vi.first, k = vi.second;// debug2(p, k);if (k == 1) ans *= p+1;else ans *= (mypow(p,k+1)-1)/(p-1);}outl(ans);}signed main() {cin.tie(0);ios::sync_with_stdio(false);srand((unsigned)time(NULL));fix(12);solve();}