Submission #1027583

#	Time	Username	Problem	Language	Result	Execution time	Memory
1027583		Halym2007	Boat (APIO16_boat)	C++17	9 / 100	2 ms	600 KiB

boat

#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
#define sz size()
#define ll long long
const int N = 5e2 + 5;

ll a[N], n, md = 1e9 + 7, dp[N][2];

int main () {
	int n;
	cin >> n;
	for (int i = 1; i <= n; ++i) {
		int l, r;
		cin >> l >> r;
		a[i] = l;
	}
	for (int i = 1; i <= n; ++i) {
		dp[i][0] = dp[i - 1][0] + dp[i - 1][1];
		dp[i][0] %= md;
		dp[i][1] = 1;
		for (int j = i - 1; j > 0; j--) {
			if (a[i] > a[j]) {
				dp[i][1] += dp[j][1];
				dp[i][1] %= md;
			}
		}
	}
	cout << (dp[n][1] + dp[n][0]) % md;
}	

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