제출 #374402

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
374402		VEGAnn	Euklid (COCI20_euklid)	C++14	20 / 110	1 ms	364 KiB

euklid

#include <bits/stdc++.h>
using namespace std;
typedef long double ld;
typedef long long ll;
const ld E = 1e-9;
const int N = 2010;
ll h, g;

ll R(ll a, ll b){
    if (b > a)
        return R(b, a);

    if (b == 1) return a;

    return R(a / b, b);
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

#ifdef _LOCAL
    freopen("in.txt","r",stdin);
#endif // _LOCAL

    int qq; cin >> qq;

    for (; qq; qq--){
        cin >> g >> h;

        if (h <= g){
            cout << g << " " << h * g << '\n';

            continue;
        }

        ll beg = g * ((h + g - 1) / g);

        for (ll i = 1; ; i++)
            if (__gcd(beg, i) == g && R(i, beg) == h){
                cout << beg << " " << i << '\n';
                break;
            }
    }

    return 0;
}

• Subtask 1: 4 / 4
• Subtask 2: 8 / 8
• Subtask 3: 8 / 8
• Subtask 4: 0 / 15
• Subtask 5: 0 / 40
• Subtask 6: 0 / 35