Submission #1029107

#	Time	Username	Problem	Language	Result	Execution time	Memory
1029107		Amadoo	Carnival Tickets (IOI20_tickets)	C++17	27 / 100	315 ms	90716 KiB

tickets

#include <bits/stdc++.h>
#include "tickets.h"
using namespace std;
	
const int N = 1505;

long long dp[N][N];

long long find_maximum(int k, std::vector<std::vector<int>> x) {
	int n = x.size();
	int m = x[0].size();
	vector <vector <int>> ans(n, vector <int>(m, -1));
	for(int i = 1; i <= n; ++i) {
		for(int j = 0; j <= n; ++j) {
			if(j == 0) dp[i][j] = dp[i - 1][j] - x[i - 1][0];
			else dp[i][j] = max(dp[i - 1][j] - x[i - 1][0], dp[i - 1][j - 1] + x[i - 1][m - 1]);
		}
	}
	for(int i = n, j = (n + 1) / 2; i >= 1; --i) {
		if(dp[i][j] == dp[i - 1][j] - x[i - 1][0]) {
			ans[i - 1][0] = 0;
		}
		else if(dp[i][j] == dp[i - 1][j - 1] + x[i - 1][m - 1]) {
			ans[i - 1][m - 1] = 0;
			j--;
		}
	}
	allocate_tickets(ans);
	return dp[n][(n + 1) / 2];
}

• Subtask 1: 11 / 11
• Subtask 2: 16 / 16
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23
• Subtask 7: 0 / 10