제출 #871734

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
871734		Nonoze	메기 농장 (IOI22_fish)	C++17	9 / 100	64 ms	9548 KiB

fish

#include "fish.h"
//#include "grader.cpp"

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

map<pair<int, pair<int, int>>, int> memo;
vector<vector<int>> values;
int n;
int mini=0;

int dp(int empl, int take, int pretake) {
	if (empl>=n) return 0;
	if (memo.count({empl, {take, pretake}})) return memo[{empl, {take, pretake}}];
	int ans=dp(empl+1, 0, take);
	int sum=0;
	for (int i=0; i<mini; i++) {
		int temp=dp(empl+1, i+1, take);
		if (pretake<i+1 && take<i+1 && empl>0) {
			sum+=values[empl-1][i];
		}
		if (empl+1<n) sum+=values[empl+1][i];
		if (take>=i+1) sum-=values[empl][i];
		ans=max(ans, temp+sum);
	}
	return memo[{empl, {take, pretake}}]=ans;
}

#undef int
long long max_weights(int N, int m, vector<int> x, vector<int> y, vector<int> w) {
	#define int long long
	n=N;
	bool tacha=true, tachb=true, tachc=true;
	for (int i = 0; i < m; ++i)
	{
		if (x[i]%2) tacha=false;
		if (x[i]>1) tachb=false;
		if (y[i]) tachc=false;
	}
	if (tacha)
	{
		int ans=0;
		for (int i = 0; i < m; ++i) ans+=w[i];
		return ans;
	}
	if (tachb)
	{
		vector<vector<int>> farm(2, vector<int> (n, 0));
		for (int i=0; i<m; i++) {
			farm[x[i]][y[i]]=w[i];
		}
		vector<int> suml, sumr;
		suml.push_back(farm[0][0]);
		sumr.push_back(farm[1][0]);
		for (int i=1; i<n; i++) {
			suml.push_back(suml.back()+farm[0][i]);
			sumr.push_back(sumr.back()+farm[1][i]);
		}
		if (n==2) return max(suml.back(), sumr.back());
		int ans=sumr.back();
		for (int i=0; i<n; i++) {
			ans=max(ans, suml[i]+sumr.back()-sumr[i]);
		}
		return ans;
	}
	mini=0;
	for (int i=0; i<m; i++) {
		mini=max(mini, (long long) y[i]);
	}
	values.resize(n, vector<int>(mini, 0));
	for (int i=0; i<m; i++) {
		values[x[i]][y[i]]=w[i];
	}
	return dp(0, 0, 0);
	#undef int
}

컴파일 시 표준 에러 (stderr) 메시지

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:34:31: warning: variable 'tachc' set but not used [-Wunused-but-set-variable]
   34 |  bool tacha=true, tachb=true, tachc=true;
      |                               ^~~~~

• Subtask 1: 3 / 3
• Subtask 2: 6 / 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