Submission #374430

#	Time	Username	Problem	Language	Result	Execution time	Memory
374430		VEGAnn	Euklid (COCI20_euklid)	C++14	75 / 110	1096 ms	512 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


//    cerr << R(36, 130) << '\n';
//    cerr << R(38, 137) << '\n';
//    cerr << R(26, 91) << '\n';
//    cerr << R(28, 98) << '\n';
//    cerr << R(40, 120) << '\n';
//
//    return 0;

    int qq; cin >> qq;

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

        if (h <= g){
            if (R(g, h * g) == h){
                cout << g << " " << h * g << '\n';
                continue;
            }

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

            continue;
        }

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

        for (ll i = g; ; i += g)
            if (__gcd(i, beg) == 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: 15 / 15
• Subtask 5: 40 / 40
• Subtask 6: 0 / 35