結果

問題 No.1529 Constant Lcm
ユーザー noya2noya2
提出日時 2021-06-04 20:47:29
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 862 ms / 3,000 ms
コード長 3,930 bytes
コンパイル時間 4,932 ms
コンパイル使用メモリ 274,356 KB
実行使用メモリ 57,844 KB
最終ジャッジ日時 2024-04-30 00:27:54
合計ジャッジ時間 13,658 ms
ジャッジサーバーID
(参考情報)
judge2 / judge3
このコードへのチャレンジ
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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 2 ms
5,248 KB
testcase_01 AC 2 ms
5,376 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 1 ms
5,376 KB
testcase_04 AC 1 ms
5,376 KB
testcase_05 AC 2 ms
5,376 KB
testcase_06 AC 2 ms
5,376 KB
testcase_07 AC 2 ms
5,376 KB
testcase_08 AC 1 ms
5,376 KB
testcase_09 AC 2 ms
5,376 KB
testcase_10 AC 759 ms
53,120 KB
testcase_11 AC 265 ms
23,296 KB
testcase_12 AC 11 ms
5,376 KB
testcase_13 AC 621 ms
45,952 KB
testcase_14 AC 377 ms
30,976 KB
testcase_15 AC 415 ms
32,640 KB
testcase_16 AC 309 ms
26,112 KB
testcase_17 AC 155 ms
15,872 KB
testcase_18 AC 177 ms
16,896 KB
testcase_19 AC 392 ms
31,744 KB
testcase_20 AC 862 ms
57,728 KB
testcase_21 AC 845 ms
57,616 KB
testcase_22 AC 831 ms
57,728 KB
testcase_23 AC 857 ms
57,844 KB
testcase_24 AC 824 ms
57,728 KB
testcase_25 AC 787 ms
57,680 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 #

#include <bits/stdc++.h>
/*
#include <boost/multiprecision/cpp_dec_float.hpp>
#include <boost/multiprecision/cpp_int.hpp>
namespace mp = boost::multiprecision;
using bint = mp::cpp_int;
*/
#include <atcoder/all>
#include <iostream>
#include <queue>
#include <stack>
#include <vector>
#include <string>
#include <set>
#include <map>
#include <random>
#include <bitset>
#define rep(i,n) for (int i = 0; i < int(n); ++i)
#define repp(i,n,m) for (int i = m; i < int(n); ++i)
using namespace std;
using namespace atcoder;
using namespace internal;
//alias g++='g++ -I/mnt/c/Users/Owner/Desktop/ac-library'
using ll = long long;
using ld = long double;
using P = pair<int, int>;
using PI = pair<pair<int,int>,int>;
using PL = pair<long long, long long>;
using PLL = pair<pair<long long, long long>, long long>;
using Pxy = pair<long double, long double>;
const int INF = 1001001007;
const int modd = 1000000007;
const long long modl = 1000000007LL;
const long long mod = 998244353LL;
const ll inf = 2e18;

template <typename SA>
void priv(vector<SA> &ar){
    if (ar.size() == 0) cout << endl;
    else {
        rep(i,ar.size()-1) cout << ar[i] << " ";
        cout << ar[ar.size()-1] << endl;
    } 
}
template <typename SB>
void privv(vector<vector<SB>> &ar){
    rep(i,ar.size()){
        rep(j,ar[i].size()-1) cout << ar[i][j] << " ";
        cout << ar[i][ar[i].size()-1] << endl;
    }
}
template <typename SC>
bool range(SC a, SC b, SC x){return (a <= x && x < b);}
bool rrange(P a, P b, P xy){
    bool s = range(a.first,b.first,xy.first);
    bool t = range(a.second,b.second,xy.second);
    return (s && t);
}
template <typename SD>
void sor(vector<SD> &ar){sort(ar.begin(),ar.end());}
template <typename SE>
void rev(vector<SE> &ar){reverse(ar.begin(),ar.end());}
template <typename SF>
bool chmin(SF &a, const SF &b){if(a>b){a = b; return true;} return false;}
template <typename SG>
bool chmax(SG &a, const SG &b){if(a<b){a = b; return true;} return false;}
template <typename SH>
void eru(vector<SH> &ar){sor(ar);ar.erase(unique(ar.begin(),ar.end()),ar.end());}
template <typename SI>
SI   last(vector<SI> &ar){return ar[ar.size()-1];}
template <typename SJ>
SJ   cel(SJ a, SJ b){if (a % b == 0) return a/b; return a/b +1;}
template <typename SK, typename SL>
void pout(pair<SK,SL> p) {cout << p.first << " " << p.second << endl;}

void yes(){cout << "Yes" << endl;}
void no (){cout << "No" << endl;}
void yn (bool t){if(t)yes();else no();}
void Yes(){cout << "YES" << endl;}
void No (){cout << "NO" << endl;}
void YN (bool t){if(t)Yes();else No();}
void dout() {cout << setprecision(20);}

vector<int> dx = {0,1,0,-1};
vector<int> dy = {1,0,-1,0};
const string ALP = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const string alp = "abcdefghijklmnopqrstuvwxyz";

ll gcds(ll a, ll b){
    ll c = a % b;
    while (c != 0){
        a = b;
        b = c;
        c = a % b;
    }
    return b;
}

int main(){
    int n; cin >> n;
    vector<int> div(n+1,-1);
    set<int> st;
    repp(i,n+1,2) st.insert(i);
    repp(i,n+1,2){
        if (div[i] != -1) continue;
        for (int j = i; j <= n; j += i){
            if (div[j] == -1) div[j] = i;
        }
    }
    map<int,int> mp;
    repp(i,n,1){
        if (i > n - i) break;
        int a = i;
        int b = n - i;
        map<int,int> ima;
        while (a > 1){
            int h = div[a];
            if (ima.find(h) == ima.end()) ima[h] = 1;
            else ima[h]++;
            a /= h;
        }
        while (b > 1){
            int h = div[b];
            if (ima.find(h) == ima.end()) ima[h] = 1;
            else ima[h]++;
            b /= h;
        }
        for (auto p : ima){
            if (mp.find(p.first) == mp.end()) mp[p.first] = p.second;
            else chmax(mp[p.first],p.second);
        }
    }
    modint998244353 ans = 1;
    for (P q : mp){
        modint998244353 y = q.first;
        ans *= y.pow(q.second);
    }
    cout << ans.val() << endl;
}
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