Submission #388946

#	Time	Username	Problem	Language	Result	Execution time	Memory
388946		prvocislo	Boat (APIO16_boat)	C++17	9 / 100	1 ms	336 KiB

boat

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <queue>
#include <map>
#include <iomanip>
typedef long long ll;
using namespace std;

const ll mod = 1e9 + 7;
void upd(ll& a, const ll& b) { a = (a + b) % mod; }
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n;
	cin >> n;
	vector<int> a(n + 1), b(n + 1);
	for (int i = 1; i <= n; i++) cin >> a[i] >> b[i];
	vector<ll> dp(n + 1, 0);
	dp[0] = 1;
	ll ans = 0;
	for (int i = 1; i <= n; i++)
	{
		for (int j = 0; j < i; j++)
		{
			if (a[j] < a[i]) upd(dp[i], dp[j]);
		}
		upd(ans, dp[i]);
	}
	cout << ans << "\n";
	return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 0 / 22
• Subtask 3: 0 / 27
• Subtask 4: 0 / 42