oj.uz

Submission #749291

# Submission time Handle Problem Language Result Execution time Memory
749291 2023-05-27T17:18:44 Z happypotato Catfish Farm (IOI22_fish) C++17
35 / 100
 838 ms 2097152 KB 
#include "fish.h"

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

long long max_weights(int32_t n, int32_t m, vector<int32_t> X, vector<int32_t> Y,
					vector<int32_t> W) {
	
	int a[n + 1][n + 1];
	for (int i = 0; i <= n; i++) {
		for (int j = 0; j <= n; j++) {
			a[i][j] = 0;
		}
	}
	for (int i = 0; i < m; i++) {
		X[i]++; Y[i]++;
		a[X[i]][Y[i]] = W[i];
	}
	// for (int i = 1; i <= n; i++) {
	// 	for (int j = 1; j <= n; j++) {
	// 		cerr << a[i][j] << ' ';
	// 	}
	// 	cerr << endl;
	// }
	// cerr << endl;
	int ps[n + 1][n + 1]; // ps[i][j] = a[i][1] + ... + a[i][j]
	for (int i = 1; i <= n; i++) {
		ps[i][0] = 0;
		for (int j = 1; j <= n; j++) {
			ps[i][j] = ps[i][j - 1] + a[i][j];
		}
	}
	
	int dp[2][n + 1][n + 1];
	// dp[increasing][pos][height] = max ans from 1 to pos with pos getting height, height must be increasing
	for (int i = 0; i <= n; i++) {
		dp[0][0][i] = dp[1][0][i] = (i == 0 ? 0 : -1e18);
		dp[0][1][i] = dp[1][1][i] = 0;
	}
	int cur[n + 1];
	function<void(void)> resetcur = [&]() {
		for (int i = 0; i <= n; i++) cur[i] = 0;
	};

	for (int i = 2; i <= n; i++) {
		for (int j = 0; j <= n; j++) {
			dp[0][i][j] = dp[1][i][j] = 0;
		}
		// Case 0: height of i is 0
		resetcur();
		dp[0][i][0] = max(dp[0][i - 1][0], dp[1][i - 1][0]);
		for (int j = 1; j <= n; j++) {
			dp[0][i][0] = max(dp[0][i][0], max(dp[0][i - 1][j], dp[1][i - 1][j]) + ps[i][j]);
		}
		dp[1][i][0] = dp[0][i][0];

		// Case 1: height of i-1 is 0
		// Case 1.1: height of i-2 <= height of i
		resetcur();
		cur[0] = dp[0][i - 2][0];
		for (int j = 1; j <= n; j++) {
			cur[j] = max(cur[j - 1], max(dp[0][i - 2][j], dp[1][i - 2][j]));
		}
		for (int j = 0; j <= n; j++) {
			dp[0][i][j] = max(dp[0][i][j], cur[j] + ps[i - 1][j]);
			dp[1][i][j] = max(dp[1][i][j], cur[j] + ps[i - 1][j]);
		}
		// Case 1.2: height of i-2 >= height of i
		resetcur();
		cur[n] = dp[0][i - 2][n] + ps[i - 1][n];
		for (int j = n - 1; j >= 0; j--) {
			cur[j] = max(cur[j + 1], max(dp[0][i - 2][j], dp[1][i - 2][j]) + ps[i - 1][j]);
		}
		for (int j = 0; j <= n; j++) {
			dp[0][i][j] = max(dp[0][i][j], cur[j]);
			dp[1][i][j] = max(dp[1][i][j], cur[j]);
		}

		// now height of i-1 > 0
		// Case 2: height of i-1 <= height of i
		resetcur();
		cur[1] = dp[0][i - 1][1];
		for (int j = 2; j <= n; j++) {
			cur[j] = max(cur[j - 1] + a[i - 1][j], dp[0][i - 1][j]);
		}
		for (int j = 1; j <= n; j++) {
			dp[0][i][j] = max(dp[0][i][j], cur[j]);
		}

		// Case 3: height of i-1 >= height of i
		resetcur();
		cur[n] = dp[1][i - 1][n];
		for (int j = n - 1; j >= 1; j--) {
			cur[j] = max(cur[j + 1] + a[i][j + 1], dp[1][i - 1][j]);
		}
		for (int j = 1; j <= n; j++) {
			dp[1][i][j] = max(dp[1][i][j], cur[j]);
		}
	}

	int ans = 0;
	for (int i = 0; i <= n; i++) {
		// cerr << dp[0][n][i] << ' ' << dp[1][n][i] << endl;
		ans = max(ans, max(dp[0][n][i], dp[1][n][i]));
	}
	return ans;
}

#undef int

Subtask #1
0 / 3.0

# Verdict Execution time Memory Grader output
1 Runtime error 760 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Runtime error 838 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 718 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 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 5 ms 3128 KB Output is correct
11 Correct 2 ms 984 KB Output is correct
12 Correct 4 ms 3156 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 4 ms 3156 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 5 ms 3128 KB Output is correct
11 Correct 2 ms 984 KB Output is correct
12 Correct 4 ms 3156 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 4 ms 3156 KB Output is correct
15 Correct 4 ms 3148 KB Output is correct
16 Correct 1 ms 440 KB Output is correct
17 Correct 17 ms 4924 KB Output is correct
18 Correct 16 ms 4916 KB Output is correct
19 Correct 17 ms 4948 KB Output is correct
20 Correct 20 ms 4808 KB Output is correct
21 Correct 16 ms 4916 KB Output is correct
22 Correct 38 ms 6704 KB Output is correct
23 Correct 7 ms 3380 KB Output is correct
24 Correct 13 ms 4340 KB Output is correct
25 Correct 5 ms 3156 KB Output is correct
26 Correct 8 ms 3452 KB Output is correct

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 5 ms 3128 KB Output is correct
11 Correct 2 ms 984 KB Output is correct
12 Correct 4 ms 3156 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 4 ms 3156 KB Output is correct
15 Correct 4 ms 3148 KB Output is correct
16 Correct 1 ms 440 KB Output is correct
17 Correct 17 ms 4924 KB Output is correct
18 Correct 16 ms 4916 KB Output is correct
19 Correct 17 ms 4948 KB Output is correct
20 Correct 20 ms 4808 KB Output is correct
21 Correct 16 ms 4916 KB Output is correct
22 Correct 38 ms 6704 KB Output is correct
23 Correct 7 ms 3380 KB Output is correct
24 Correct 13 ms 4340 KB Output is correct
25 Correct 5 ms 3156 KB Output is correct
26 Correct 8 ms 3452 KB Output is correct
27 Correct 335 ms 282392 KB Output is correct
28 Correct 79 ms 26704 KB Output is correct
29 Correct 420 ms 294912 KB Output is correct
30 Incorrect 463 ms 294952 KB 1st lines differ - on the 1st token, expected: '102439236138254', found: '102426281544023'
31 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 718 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 Runtime error 760 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -