Submission #415841

#	Time	Username	Problem	Language	Result	Execution time	Memory
415841		grt	Boat (APIO16_boat)	C++17	9 / 100	4 ms	332 KiB

boat

#include <bits/stdc++.h>
#define ST first
#define ND second
#define PB push_back

using namespace std;
using ll = long long;
using pi = pair<int,int>;
using vi = vector<int>;

const int nax = 500 + 10, mod = 1e9 + 7;
int n, mx;
int dp[nax];
int a[nax], b[nax];

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin >> n;
	for(int i = 1; i <= n; ++i) {
		cin >> a[i] >> b[i];
	}
	dp[0] = 1;
	for(int i = 1; i <= n; ++i) {
		for(int j = i - 1; j >= 0; --j) {
			if(a[j] < a[i]) {
				dp[i] = (dp[i] + dp[j]) % mod;
			}
		}
	}
	int sum = 0;
	for(int i = 1; i <= n; ++i) {
		sum = (sum + dp[i]) % mod;
	}
	cout << sum;
		
}

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