Submission #701300

#	Time	Username	Problem	Language	Result	Execution time	Memory
701300		n1k	Catfish Farm (IOI22_fish)	C++17	0 / 100	32 ms	15736 KiB

fish

#include <bits/stdc++.h>

#define ll long long
#define vt vector
#define pb push_back
#define ar array
#define all(x) (x).begin(), (x).end()
#define sz(x) (x).size()

using namespace std;

/*
 ## TAKE IT EASY ##
 1. simplify
 2. add new elements
 3. brute force solution
 4. optimize
 5. start implementing
*/

// --- templates ---

// --- code ---

ll dp[305][2][2];

ll max_weights(int n, int m, vt<int> X, vt<int> Y, vt<int> W){
	int h = 2;
	vt<vt<ll>> a(n + 5, vt<ll>(h));
	for(int i = 0; i < m; i++){
		a[X[i]][1] = W[i];
	}

	for(int i = 0; i < n; i++){
		// dp[i][0][0]
		// dp[i][0][1]
		// dp[i][1][0]
		// dp[i][1][1]
		/*
		for(int j = 0; j < h; j++){
			for(int k = 0; k < h; k++){
				dp[i][k][0] = max(dp[i][k][0], dp[i - 1][j][k]);
			}
			dp[i][0][1] = max(dp[i][0][1], dp[i - 1][j][0] + a[i - 1][1 - j] + a[i + 1][1]);
			dp[i][1][1] = max(dp[i][1][1], dp[i - 1][j][1] + a[i + 1][1]);
		}
		*/
		for(int h1 = 0; h1 < h; h1++){
			for(int h2 = 0; h2 < h; h2++){
				for(int h3 = 0; h3 < h; h3++){
					ll l = 0, r = a[i + 1][h3];
					if(i == 0){
						dp[i][h2][h3] = max(dp[i][h2][h3], r);
					}else{
						if(!(h1 || h2)){
							l = a[i - 1][h3];
						}
						dp[i][h2][h3] = max(dp[i][h2][h3], l + dp[i - 1][h1][h2] + r);
					}
				}
			}
		}
	}
	ll ans = 0;
	for(int h2 = 0; h2 < h; h2++){
		for(int h3 = 0; h3 < h; h3++){
			ans = max(ans, dp[n - 1][h2][h3]);
		}
	}
	return ans;
}

• Subtask 1: 0 / 3
• Subtask 2: 0 / 6
• Subtask 3: 0 / 9
• Subtask 4: 0 / 14
• Subtask 5: 0 / 21
• Subtask 6: 0 / 17
• Subtask 7: 0 / 14
• Subtask 8: 0 / 16