Submission #1168857

#	Time	Username	Problem	Language	Result	Execution time	Memory
1168857		mahmudow_mahmyt	Boat (APIO16_boat)	C++20	0 / 100	1 ms	328 KiB

boat

#include<bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define mxn 502
#define pb push_back
#define yes cout<<"YES"<<endl
#define no cout<<"NO"<<endl
using namespace std;
int dp[mxn][2],n,a[mxn],mod=1e9+7;
int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
//	freopen("input.txt","r",stdin);
// 	freopen("output.txt","w",stdout);
	cin>>n;
	for(int i=1;i<=n;i++) cin>>a[i];
	dp[1][0]=1,dp[1][1]=1;
	for(int i=2;i<=n;i++){
		dp[i][0]=(dp[i-1][0]+dp[i-1][1])%mod;
		dp[i][1]=1;
		for(int j=1;j<i;j++){
			if(a[i]>a[j]) dp[i][1]=(dp[i][1]+dp[j][1])%mod;
		}
	}
	cout<<(dp[n][0]+dp[n][1]-1+mod)%mod;
}

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