Submission #1106953

#	Time	Username	Problem	Language	Result	Execution time	Memory
1106953		I_am_Polish_Girl	Catfish Farm (IOI22_fish)	C++17	0 / 100	59 ms	26292 KiB

fish

/*
In honor of Anton Tsypko
I want earrings with minecreaft
I want earrings with birbie
*/

#include "fish.h"

#include <vector>
#include <algorithm>
#include <map>
#include <set>
#include <unordered_map>
#include <unordered_set>
#include <stack>
#include <queue>
#include <cmath>
#include <random>
#include <chrono>
#include <iomanip>
#include <iostream>
#include <bitset>
#include <cmath>
#include <string>

using namespace std;


int log_ = 23;
int inf = 2000000007;
int mod = 1000000007;

int p = 523;


#include <vector>

long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y, std::vector<int> W) 
{
	int n = N;
	

	vector <vector <pair <int, int>>> vp(n);


	for (int i = 0; i < X.size(); i++)
	{
		vp[X[i]].push_back({ Y[i] , W[i] });
	}

	for (int i = 0; i < n; i++)
	{
		sort(vp[i].begin(), vp[i].end());
	}

	vector <vector <int>> dp0(n);
	vector <vector <int>> dp1(n);

	for (int i = 0; i < n; i++)
	{
		dp0[i].resize(vp[i].size());
		dp1[i].resize(vp[i].size());
	}

	int ans = 0;
	int mx_ = 0;

	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < vp[i].size(); j++)
		{
			ans = max(ans , mx_ + vp[i][j].second);
		}

		if (i != n - 1)
		{
			int ind = 0;

			int sz = vp[i].size();

			int mx = 0;

			for (int j = 0; j < sz; j++)
			{
				while ((ind < vp[i - 1].size()) and (vp[i - 1][ind] < vp[i][j]))
				{
					
					mx = max(mx, dp0[i - 1][ind]);
					ind++;
				}

				mx = max(mx, mx_);

				dp0[i][j] = mx + vp[i][j].second;
				mx = max(mx, dp0[i][j]);
			}
		}

		if (i != 0)
		{
			int ind = vp[i - 1].size();

			ind--;

			int sz = vp[i].size();

			int mx = 0;

			for (int j = sz - 1; j >= 0; j--)
			{
				while ((ind >= 0) and (vp[i - 1][ind] > vp[i][j]))
				{
					mx = max(mx, dp1[i - 1][ind]);
					ind--;

				}

				mx = max(mx, mx_);

				dp1[i][j] = mx + vp[i][j].second;
				mx = max(mx, dp1[i][j]);
			}

		}


		for (int j = 0; j < vp[i].size(); j++)
		{
			ans = max(ans, dp0[i][j]);
			ans = max(ans, dp1[i][j]);
		}

		if (i - 1 >= 0)
		{
			for (int j = 0; j < vp[i - 1].size(); j++)
			{
				mx_ = max(mx_, dp0[i - 1][j]);
				mx_ = max(mx_, dp1[i - 1][j]);
			}
		}
	}


	return ans;
}

Compilation message (stderr)

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:46:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |  for (int i = 0; i < X.size(); i++)
      |                  ~~^~~~~~~~~~
fish.cpp:70:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |   for (int j = 0; j < vp[i].size(); j++)
      |                   ~~^~~~~~~~~~~~~~
fish.cpp:85:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |     while ((ind < vp[i - 1].size()) and (vp[i - 1][ind] < vp[i][j]))
      |             ~~~~^~~~~~~~~~~~~~~~~~
fish.cpp:127:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  127 |   for (int j = 0; j < vp[i].size(); j++)
      |                   ~~^~~~~~~~~~~~~~
fish.cpp:135:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  135 |    for (int j = 0; j < vp[i - 1].size(); j++)
      |                    ~~^~~~~~~~~~~~~~~~~~

• 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