Submission #448197

#	Time	Username	Problem	Language	Result	Execution time	Memory
448197		Apiram	Euklid (COCI20_euklid)	C++14	4 / 110	1091 ms	204 KiB

euklid

#include<bits/stdc++.h>
using namespace std;
int64_t solve(int a,int b){
	if (a==1){
		return b;
	}
	if (b==1)return a;
	if (a<b)solve(b/a,a);
	else
	return solve(a/b, b);
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int test;cin>>test;
while(test--){
	int64_t g,h;
	cin>>g>>h;
	vector<pair<int,int>>ans;
	if (g==1){
		cout<<1<<" "<<h<<endl;
		continue;
	}
	else if (g==h){
		cout<<g<<" "<<h<<endl;
		continue;
	}
	else if (h==2){
		while(true){
		int left = 2,right =3;
		for (int i = left;i<=right;++i){
			for (int j = left;j<i;++j){
				if (__gcd(i,j)==g){
					ans.push_back({i,j});
					break;
				}
			}
			if (!ans.empty())break;
		}
		if (!ans.empty())break;
		left*=2;
		right*=2;
		}
		cout<<ans[0].first<<" "<<ans[0].second<<endl;
		continue;
	}
	for (int i = g;i<=200000;i+=g){
		for (int j =g;j<=i;j+=g){
			if (__gcd(i,j)==g){
				if (solve(i,j)==h){
					ans.push_back({i,j});
					break;
				}			
			}
		}
		if (!ans.empty())break;
	}
	cout<<ans[0].first<<" "<<ans[0].second<<endl;
}
return 0;}

Compilation message (stderr)

euklid.cpp: In function 'int64_t solve(int, int)':
euklid.cpp:8:15: warning: control reaches end of non-void function [-Wreturn-type]
    8 |  if (a<b)solve(b/a,a);
      |          ~~~~~^~~~~~~

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