#63553 (C++11（廃止可能性あり）) No.312 置換処理

• 問題: No.312 置換処理
• ユーザー: Gyuuto
• 提出日時: 2015-12-07 05:33:09
• 言語: C++11（廃止可能性あり） (gcc 13.3.0)
• 結果: AC
• 実行時間: 19 ms / 2,000 ms
• コード長: 2,307 bytes
• コンパイル時間: 742 ms
• コンパイル使用メモリ: 91,204 KB
• 実行使用メモリ: 7,404 KB
• 最終ジャッジ日時: 2024-11-15 11:57:12
• 合計ジャッジ時間: 2,780 ms
• ジャッジサーバーID （参考情報）: judge5 / judge4

ファイルパターン	結果
other	AC * 45

ソースコード

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// Standard I/O
#include <iostream>
#include <sstream>
#include <cstdio>
// Standard Library
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <cmath>
// Template Class
#include <complex>
#include <string>
#include <vector>
#include <list>
#include <set>
#include <map>
#include <queue>
#include <stack>
// Container Control
#include <algorithm>
using namespace std;
#define rep( i, n ) for( int i = 0; i < n; ++i )
#define irep( i, n ) for( int i = n-1; i >= 0; --i )
#define reep( i, s, n ) for ( int i = s; i < n; ++i )
#define ireep( i, n, s ) for ( int i = n-1; i >= s; --i )
#define foreach(itr, x) for( typeof(x.begin()) itr = x.begin(); itr != x.end(); ++itr)
#define mp( a, b ) make_pair( a, b )
#define pb( a ) push_back( a )
#define all( v ) v.begin(), v.end()
#define fs first
#define sc second
#define vc vector
// for visualizer.html
double SCALE = 1.0;
double OFFSET_X = 0.0;
double OFFSET_Y = 0.0;
#define LINE(x,y,a,b) cerr << "line(" << SCALE*(x) + OFFSET_X << ","    \
    << SCALE*(y) + OFFSET_Y << ","                                      \
    << SCALE*(a) + OFFSET_X << ","                                      \
    << SCALE*(b) + OFFSET_Y << ")" << endl;
#define CIRCLE(x,y,r) cerr << "circle(" << SCALE*(x) + OFFSET_X << ","  \
    << SCALE*(y) + OFFSET_Y << ","                                      \
    << SCALE*(r) << ")" << endl;
typedef long long ll;
typedef complex<double> Point;
typedef pair<int, int> pii;
typedef pair<int, pii> ipii;
typedef vector<int> vi;
typedef vector<double> vd;
typedef vector< vector<int> > vii;
typedef vector< vector<double> > vdd;
typedef vector<int>::iterator vi_itr;
const int IINF = 1 << 28;
const double INF = 1e30;
const double EPS = 1e-10;
const double PI = acos(-1.0);
// Direction : L U R D
const int dx[] = { -1, 0, 1, 0};
const int dy[] = { 0, -1, 0, 1 };
bool isprime[2000010];
vector<ll> prime;
int main()
{
    ll n;
    cin >> n;
    reep(i, 2, 2000010) isprime[i] = true;
    reep(i, 2, 2000010) if( isprime[i] ){
        prime.pb(i);
        for( int j = 2*i; j < 2000010; j+= i ) isprime[j] = false;
    }
    set<ll> factor;
    rep(i, prime.size()){
        ll tmp = prime[i];
        while( n % prime[i] == 0 ){
            factor.insert(n / tmp);
            factor.insert(tmp);
            n /= prime[i];
            tmp *= prime[i];
        }
    }
    if( factor.size() == 0 ) cout << n << endl;
    else{
        for( auto i : factor )
            if( i > 2 ){
                cout << i << endl;
                break;
            }
    }
}
 
 
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