Submission #703176

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
703176	2023-02-26T12:40:28 Z	n1k	Catfish Farm (IOI22_fish)	C++17	35 / 100	1000 ms	2097152 KB

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 ---

const int N = 3000 + 10, FLOW = 3;

ll dp[N][FLOW][N];

ll max_weights(int n, int m, vt<int> X, vt<int> Y, vt<int> W){
	memset(dp, 0, sizeof dp);

	int h = n + 5;

	vt<vt<ll>> a(n + 5, vt<ll>(h));

	for(int i = 0; i < m; i++){
		a[X[i]][Y[i] + 1] = W[i];
	}

	for(int i = 0; i < n; i++){
		for(int j = 1; j < h; j++){
			a[i][j] += a[i][j - 1];
		}
	}

	for(int i = 0; i < n; i++){
		for(int flow = 0; flow < FLOW; flow++){
			for(int h1 = 0; h1 < h; h1++){
				for(int h2 = 0; h2 < (flow == 0 ? h1 + 1 : h); h2++){

					int nflow = h1 <= h2;
					if(i == 0){
						dp[i][nflow][h2] = max(dp[i][nflow][h2], a[i + 1][h2]);
					}else{
						if(flow == 0){
							dp[i][nflow][h2] = max(dp[i][nflow][h2], dp[i - 1][flow][h1] + a[i + 1][h2] - a[i][h2]);
						}else if(flow == 1){
							dp[i][nflow][h2] = max(dp[i][nflow][h2], dp[i - 1][flow][h1] + a[i + 1][h2] + max((ll)0, (a[i - 1][h2] - a[i - 1][h1])) - min(a[i][h1], a[i][h2]));
						}else{
							nflow = 1;
							dp[i][nflow][h2] = max(dp[i][nflow][h2], dp[i - 1][flow][h1] + a[i + 1][h2] + max((ll)0, (a[i - 1][h2] - a[i - 1][h1])));
						}
					}
				}
				if(i)
					dp[i][2][h1] = max(dp[i - 1][0][h1], dp[i - 1][1][h1]);
			}
		}
	}

	ll ans = 0;

	for(int flow = 0; flow < FLOW; flow++){
		for(int h1 = 0; h1 < h; h1++){
			ans = max(ans, dp[n - 1][flow][h1]);
		}
	}

	return ans;
}

Subtask #1
0 / 3.0

#	Verdict	Execution time	Memory	Grader output
1	Execution timed out	1032 ms	2097152 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #2
0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	88 ms	212940 KB	Output is correct
2	Runtime error	916 ms	2097152 KB	Execution killed with signal 9
3	Halted	0 ms	0 KB	-

Subtask #3
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	751 ms	2097152 KB	Execution killed with signal 9
2	Halted	0 ms	0 KB	-

Subtask #4
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	92 ms	212980 KB	Output is correct
2	Correct	88 ms	213036 KB	Output is correct
3	Correct	99 ms	212948 KB	Output is correct
4	Correct	89 ms	212940 KB	Output is correct
5	Correct	94 ms	212960 KB	Output is correct
6	Correct	95 ms	212948 KB	Output is correct
7	Correct	88 ms	212940 KB	Output is correct
8	Correct	87 ms	213044 KB	Output is correct
9	Correct	129 ms	213304 KB	Output is correct
10	Correct	321 ms	213876 KB	Output is correct
11	Correct	115 ms	213220 KB	Output is correct
12	Correct	311 ms	213828 KB	Output is correct
13	Correct	92 ms	213168 KB	Output is correct
14	Correct	322 ms	213816 KB	Output is correct

Subtask #5
21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	92 ms	212980 KB	Output is correct
2	Correct	88 ms	213036 KB	Output is correct
3	Correct	99 ms	212948 KB	Output is correct
4	Correct	89 ms	212940 KB	Output is correct
5	Correct	94 ms	212960 KB	Output is correct
6	Correct	95 ms	212948 KB	Output is correct
7	Correct	88 ms	212940 KB	Output is correct
8	Correct	87 ms	213044 KB	Output is correct
9	Correct	129 ms	213304 KB	Output is correct
10	Correct	321 ms	213876 KB	Output is correct
11	Correct	115 ms	213220 KB	Output is correct
12	Correct	311 ms	213828 KB	Output is correct
13	Correct	92 ms	213168 KB	Output is correct
14	Correct	322 ms	213816 KB	Output is correct
15	Correct	306 ms	213784 KB	Output is correct
16	Correct	104 ms	213072 KB	Output is correct
17	Correct	357 ms	215588 KB	Output is correct
18	Correct	315 ms	215676 KB	Output is correct
19	Correct	384 ms	215604 KB	Output is correct
20	Correct	319 ms	215604 KB	Output is correct
21	Correct	334 ms	215592 KB	Output is correct
22	Correct	339 ms	217416 KB	Output is correct
23	Correct	323 ms	214140 KB	Output is correct
24	Correct	317 ms	214988 KB	Output is correct
25	Correct	339 ms	213892 KB	Output is correct
26	Correct	307 ms	214136 KB	Output is correct

Subtask #6
0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	92 ms	212980 KB	Output is correct
2	Correct	88 ms	213036 KB	Output is correct
3	Correct	99 ms	212948 KB	Output is correct
4	Correct	89 ms	212940 KB	Output is correct
5	Correct	94 ms	212960 KB	Output is correct
6	Correct	95 ms	212948 KB	Output is correct
7	Correct	88 ms	212940 KB	Output is correct
8	Correct	87 ms	213044 KB	Output is correct
9	Correct	129 ms	213304 KB	Output is correct
10	Correct	321 ms	213876 KB	Output is correct
11	Correct	115 ms	213220 KB	Output is correct
12	Correct	311 ms	213828 KB	Output is correct
13	Correct	92 ms	213168 KB	Output is correct
14	Correct	322 ms	213816 KB	Output is correct
15	Correct	306 ms	213784 KB	Output is correct
16	Correct	104 ms	213072 KB	Output is correct
17	Correct	357 ms	215588 KB	Output is correct
18	Correct	315 ms	215676 KB	Output is correct
19	Correct	384 ms	215604 KB	Output is correct
20	Correct	319 ms	215604 KB	Output is correct
21	Correct	334 ms	215592 KB	Output is correct
22	Correct	339 ms	217416 KB	Output is correct
23	Correct	323 ms	214140 KB	Output is correct
24	Correct	317 ms	214988 KB	Output is correct
25	Correct	339 ms	213892 KB	Output is correct
26	Correct	307 ms	214136 KB	Output is correct
27	Execution timed out	1102 ms	283852 KB	Time limit exceeded
28	Halted	0 ms	0 KB	-

Subtask #7
0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	751 ms	2097152 KB	Execution killed with signal 9
2	Halted	0 ms	0 KB	-

Subtask #8
0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Execution timed out	1032 ms	2097152 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Submission #703176

Compilation message