Submission #872152

#	Time	Username	Problem	Language	Result	Execution time	Memory
872152		SalihSahin	Euklid (COCI20_euklid)	C++14	15 / 110	15 ms	600 KiB

euklid

#include<bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define int long long 
using namespace std;

const int N = 2e5 + 5;
const int mod = 1e9+7;
const int inf = 1e18 + 10;
const int L = 20 * 20 * 20;

int gcd(int a, int b){
    if(a < b) swap(a, b);
    if(b == 0) return a;
    return gcd(b, a%b);
}

int r(int a, int b){
    if(a < b) swap(a, b);
    if(b == 1) return a;
    return r(a/b, b);
}

int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int t;
    cin>>t;
    while(t--){
        int g, h;
        cin>>g>>h;
        int a, b;
        a = -1, b = -1;

        for(int i = g; i <= L; i += g){
            for(int j = i; j <= L; j += g){
                if(gcd(i, j) == g && r(i, j) == h){
                    a = i, b = j;
                    break;
                }
            }
            if(a > 0) break;
        }

        cout<<a<<" "<<b<<endl;
    }
    return 0;
}

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