Submission #418811

#	Time	Username	Problem	Language	Result	Execution time	Memory
418811		Chaska	Vepar (COCI21_vepar)	C++11	70 / 70	343 ms	14392 KiB

Main

#include <bits/stdc++.h>
using namespace std;
const int N = 1e7+6;
int t,a,b,c,d;
bool vs[N];
vector<int> primes;
void precalc()
{
	for (int i=2;i<=10000000;i++) {
		if (!vs[i]) {
			primes.push_back(i);
			for (int j=i;j<=10000000;j+=i) {
				vs[j] = true;
			} 
		}
	}
	return;
}
int calc(int u,int v)
{
	int k = 0;
	while (u) {
		k += u/v;
		u /= v;
	}
	return k;
}
int main()
{
	precalc();
	cin >> t;
	while (t--) {
		cin >> a >> b >> c >> d;
		a--;
		c--;
		bool y = true;
		for (int u : primes) {
			int p1,p4,p2,p3;
			p1 = calc(a,u);
			p2 = calc(b,u);
			p3 = calc(c,u);
			p4 = calc(d,u);
			p2 -= p1;
			p4 -= p3;
			if (p2>p4) y = false;
		}
		if(y) cout << "DA\n";
		else cout <<"NE\n";
	}
	return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10