Submission #974689

#	Time	Username	Problem	Language	Result	Execution time	Memory
974689		LCJLY	Financial Report (JOI21_financial)	C++14	28 / 100	23 ms	1804 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define int long long 
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << "  " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << "  " << j << " " << #i << "  " << q << " " << #p << endl;
#define show4(x,y) for(auto it:y) cout << it << " "; cout << #x << endl;
typedef pair<long long,long long>pii;
typedef pair<int,pii>pi2;
mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());

int arr[405];
int n,k;
int memo[405][405];

int dp(int index, int last){
	if(index==n){
		return 0;
	}
	if(memo[index][last]!=-1) return memo[index][last];
	int ans=0;
	for(int x=index+1;x<=min(n,index+k);x++){
		int ptr=last;
		int add=0;
		if(arr[x]>arr[last]){
			add=1;
			ptr=x;
		}
		ans=max(ans,dp(x,ptr)+add);
	}
	return memo[index][last]=ans;
}

void solve(){
	cin >> n >> k;
	for(int x=1;x<=n;x++){
		cin >> arr[x];
	}
	int best=0;
	memset(memo,-1,sizeof(memo));
	for(int x=1;x<=n;x++){
		best=max(best,dp(x,x)+1);
	}
	cout << best;
	
}
 
int32_t main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int t=1;
	//freopen("in.txt","r",stdin);
	//cin >> t;
	while(t--){
		solve();
	}
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 0 / 20
• Subtask 4: 0 / 12
• Subtask 5: 0 / 5
• Subtask 6: 0 / 35