Submission #819410

#	Time	Username	Problem	Language	Result	Execution time	Memory
819410		SteGG	Financial Report (JOI21_financial)	C++17	48 / 100	4072 ms	4028 KiB

Main

#include <bits/stdc++.h>
#define int long long

using namespace std;

void open(){
	if(fopen("input.inp", "r")){
		freopen("input.inp", "r", stdin);
		freopen("output.out", "w", stdout);
	}
}

const int maxn = 3e5 + 5;
const int inf = 1e9 + 7;

int n, d;
int arr[maxn];
int dp[maxn];

signed main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	open();
	cin >> n >> d;
	for(int i = 1; i <= n; i++){
		cin >> arr[i];
	}

	deque<int> dq;

	dp[1] = 1;
	dq.push_back(1);
	int result = 1;
	for(int i = 2; i <= n; i++){
		dp[i] = 1;
		for(int j = 1; j < i; j++){
			if(arr[j] < arr[i]){
				dp[i] = max(dp[i], dp[j] + 1);
			}
		}

		int temp = dp[i];
		for(int j = 1; j < i; j++){
			if(arr[j] > arr[i]){
				temp = max(temp, dp[j]);
			}
		}

		result = max(result, temp);

		while(!dq.empty() && arr[dq.back()] > arr[i]) dq.pop_back();
		while(!dq.empty() && i - dq.front() >= d) dq.pop_front();
		dq.push_back(i);
		for(int j = 1; j < i; j++){
			if(arr[j] < arr[dq.front()]){
				dp[j] = 0;
			}
		}

	}

	cout << result << endl;

	return 0;
}

Compilation message (stderr)

Main.cpp: In function 'void open()':
Main.cpp:8:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |   freopen("input.inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:9:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |   freopen("output.out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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