Submission #374505

#	Time	Username	Problem	Language	Result	Execution time	Memory
374505		ne4eHbKa	Euklid (COCI20_euklid)	C++17	75 / 110	1 ms	492 KiB

euklid

#include <bits/stdc++.h>
using namespace std;
#ifndef _LOCAL
//#pragma GCC optimize("O3,Ofast")
#else
#pragma GCC optimize("O0")
#endif
template<typename t> inline void umin(t &a, const t b) {a = min(a, b);}
template<typename t> inline void umax(t &a, const t b) {a = max(a, b);}
typedef pair<int, int> pii;
typedef long long ll;
typedef long double ld;
typedef int8_t byte;
ll time() {return chrono::system_clock().now().time_since_epoch().count();}
mt19937 rnd(time());
#define ft first
#define sd second
#define len(f) int((f).size())
#define bnd(f) (f).begin(), (f).end()
#define _ <<' '<<
const int inf = 1e9 + 5;
const ll inf64 = 4e18 + 5;
const int md = 998244353;
namespace MD {
    void add(int &a, const int b) {if((a += b) >= md) a -= md;}
    void sub(int &a, const int b) {if((a -= b) < 0) a += md;}
    int prod(const int a, const int b) {return ll(a) * b % md;}
};

ll R(ll a, ll b) {
    if(a < b) return R(b, a);
    if(b == 1) return a;
    return R(b, a / b);
}

void ans(ll a, ll b, int g, int h) {
    #ifdef KEK
    assert(__gcd(a, b) == g);
    assert(R(a, b) == h);
    #endif // KEK
    cout << a _ b << '\n';
}

void solve() {
    int g, h;
    cin >> g >> h;
    ll a = 1, b = h;
    if(g == 1) return ans(a, b, g, h);
    for(;;) {
        ll l = a * b;
        ll r = (a + 1) * b;
        ll f = l - l % g;
        if(f < l) f += g;
        if(f >= r) {
            a = b;
            b = l;
            continue;
        }
        if(b % g) {
            a = b;
            b = f;
        } else {
            while(f < r) {
                if(__gcd(b, f) == g)
                    return ans(f, b, g, h);
                f += g;
            }
            a = b;
            b = l;
        }
    }
}

signed main() {
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#ifndef _LOCAL
//    freopen("file.in", "r", stdin);
//    freopen("file.out", "w", stdout);
#else
    system("color a");
    freopen("in.txt", "r", stdin);
#endif
    int t; cin >> t;
    while(t--)
    solve();
}

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