oj.uz

답안 #634741

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
634741 2022-08-24T19:30:45 Z l_reho 메기 농장 (IOI22_fish) C++17
18 / 100
 88 ms 8136 KB 
#include "fish.h"

#include <cassert>
#include <cstdio>

#include <vector>

#include "fish.h"
 
#include <cassert>
#include <cstdio>
 
// BEGIN SECRET
#include <string>
// END SECRET
#include <vector>
 
#include <bits/stdc++.h>
using namespace std;
 
 
vector<vector<int>> V;
 
struct info{
	int y;
	int w;
	int flag;
	
};
 
 
struct CustomCompare
{
	bool operator()(info const& p, info const& p1)
    {
        return (p.y > p1.y) || (p.y == p1.y && p.flag > p1.flag);
    }
};
 
 
long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y, std::vector<int> W){
	
	// se X[i] è pari, allora posso ergere ponti per prendere tutti
	
	bool subtask1 = true;
	bool subtask2 = true;
	bool subtask3 = true;
	bool subtask4 = true;
	
	long long ans = 0;
	
	// for(int i = 0; i < (int)X.size(); i++)
		// V[X[i]][Y[i]] = W[i];
 
	for(int i = 0; i < (int)X.size(); i++){
		subtask1 &= X[i] % 2 == 0;
		subtask2 &= X[i] <= 1;
		subtask3 &= Y[i] == 0;
		subtask4 &= N <= 300;
	}
	
	if(subtask1){
		ans = accumulate(W.begin(), W.end(), 0L);
		return ans;
	}
	
	if(subtask2){
		if(N == 1) return 0;
		
		if(N == 2){
			long long x0 = 0, x1 = 0;
			for(int i = 0; i < (int)X.size(); i++){
				if(X[i] == 1) x1 += W[i];
				else x0 += W[i];
			}	
			return max(x1, x0);
		}
		
		
		
		priority_queue<info, vector<info>, CustomCompare> pq;
		
		long long x1 = 0;
		for(int i = 0; i < (int)X.size(); i++){
			pq.push({Y[i], W[i], X[i] == 0});
			if(X[i] == 1) x1 += W[i];
		}
		
		long long curr = x1;
		
		ans = curr;
		while(!pq.empty()){
			info p = pq.top();
			pq.pop();
			
			
			if(p.flag) curr += p.w, ans = max(ans, curr);
			else curr -= p.w;
			
		}
		
		return ans;
		
	}
	
	if(subtask3){
		long long dp[M][3];
		
		for(int i = 0; i < M; i++)
			for(int j = 0; j < 3; j++) dp[i][j] = 0;
		
		
		vector<pair<int, int>> V;
		
		for(int i = 0; i < M; i++) V.push_back({X[i], W[i]});
			
		sort(V.begin(), V.end());
		
		
		dp[0][0] = V[0].second;
		
		if(V[0].first != 0) {
					
			dp[0][1] = V[0].second;
		}
		
		dp[0][2] = max(dp[0][1], dp[0][0]);
		
		for(int i = 1; i < M; i++){
		
			if(abs(V[i].first-V[i-1].first) == 1){
				
				if(V[i].first < N-1)
					dp[i][0] = dp[i-1][1]+V[i].second;
			
				if(i >= 2){
					dp[i][1] = dp[i-2][2] + V[i].second;
				}else dp[i][1] = V[i].second;
			
				dp[i][2] = max(dp[i-1][2], max(dp[i][0], dp[i][1]));
			}else{
				
				dp[i][1] = dp[i][2] = dp[i-1][2] + V[i].second;
				if(V[i].first < N-1)
					dp[i][0] = dp[i][1];
				
			}
		}
		
		
		return dp[M-1][2];		
	}
 
	
	return ans;
}

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 2124 KB Output is correct
2 Correct 25 ms 2636 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 82 ms 7280 KB Output is correct
6 Correct 81 ms 7268 KB Output is correct

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 72 ms 7312 KB Output is correct
3 Correct 88 ms 8136 KB Output is correct
4 Correct 21 ms 2132 KB Output is correct
5 Correct 26 ms 2616 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 33 ms 3888 KB Output is correct
13 Correct 50 ms 4288 KB Output is correct
14 Correct 34 ms 3824 KB Output is correct
15 Correct 39 ms 4044 KB Output is correct
16 Correct 34 ms 3828 KB Output is correct
17 Correct 37 ms 4040 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 19 ms 3448 KB Output is correct
4 Correct 13 ms 2640 KB Output is correct
5 Correct 34 ms 6080 KB Output is correct
6 Correct 30 ms 6088 KB Output is correct
7 Correct 33 ms 6084 KB Output is correct
8 Correct 36 ms 6056 KB Output is correct

Subtask #4
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 19 ms 3448 KB Output is correct
4 Correct 13 ms 2640 KB Output is correct
5 Correct 34 ms 6080 KB Output is correct
6 Correct 30 ms 6088 KB Output is correct
7 Correct 33 ms 6084 KB Output is correct
8 Correct 36 ms 6056 KB Output is correct
9 Incorrect 23 ms 2632 KB 1st lines differ - on the 1st token, expected: '99999', found: '0'
10 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 2124 KB Output is correct
2 Correct 25 ms 2636 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 82 ms 7280 KB Output is correct
6 Correct 81 ms 7268 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 72 ms 7312 KB Output is correct
9 Correct 88 ms 8136 KB Output is correct
10 Correct 21 ms 2132 KB Output is correct
11 Correct 26 ms 2616 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 33 ms 3888 KB Output is correct
19 Correct 50 ms 4288 KB Output is correct
20 Correct 34 ms 3824 KB Output is correct
21 Correct 39 ms 4044 KB Output is correct
22 Correct 34 ms 3828 KB Output is correct
23 Correct 37 ms 4040 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 19 ms 3448 KB Output is correct
27 Correct 13 ms 2640 KB Output is correct
28 Correct 34 ms 6080 KB Output is correct
29 Correct 30 ms 6088 KB Output is correct
30 Correct 33 ms 6084 KB Output is correct
31 Correct 36 ms 6056 KB Output is correct
32 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
33 Halted 0 ms 0 KB -