제출 #256457

#제출 시각아이디문제언어결과실행 시간메모리
256457maximath_1Koala Game (APIO17_koala)C++11
47 / 100
136 ms3832 KiB
#include "koala.h"
#include <bits/stdc++.h>
using namespace std;

int a[105], b[105];

int minValue(int n, int w){
	for(int i = 1; i < n; i ++)
		a[i] = 0;
	a[0] = 1;
	playRound(a, b);
	for(int i = 0; i < n; i ++)
		if(a[i] >= b[i]) return i;
	return 0;
}

vector<int> large;
int maxValue(int n, int w){
	large.clear();
	for(int i = 0; i < n; i ++)
		large.push_back(i);
	for(; large.size() > 1;){
		for(int i = 0; i < n; i ++)
			a[i] = 0;
		int ct = w / large.size();
		for(int i : large)
			a[i] = ct;

		playRound(a, b);

		large.clear();
		for(int i = 0; i < n; i ++)
			if(b[i] > ct)
				large.push_back(i);
	}
	return large[0];
}

int n, w;
bool cmp(int x, int y){
	int lf = 1, rg = min(w / 2, 12);
	for(int md; lf <= rg;){
		md = (lf + rg) / 2;
		for(int i = 0; i < n; i ++)
			a[i] = 0;
		a[x] = a[y] = md;
		playRound(a, b);
		bool gt0 = b[x] > a[x];
		bool gt1 = b[y] > a[y];
		if(gt0 == gt1){
			if(gt1) lf = md + 1;
			else rg = md - 1;
		}else{
			if(gt1) return 1;
			else return 0;
		}
	}
	return 0;
}

int greaterValue(int N, int W){
	n = N, w = W;
	return cmp(0, 1);
}

int every[105];

void solve(int n, int w, vector<int> v, int l, int r){
	if(l > r) return;
	if(l == r) return void(every[v[0]] = l);
	int ct = min((int)sqrt(2 * l), min(w / (r - l + 1), 8));

	for(int i = 0; i < n; i ++)
		a[i] = 0;
	playRound(a, b);
	vector<int> lf, rg;
	for(int i : v){
		if(b[i] > ct) rg.push_back(i);
		else lf.push_back(i);
	}

	solve(n, w, lf, l, l + (int)lf.size() - 1);
	solve(n, w, rg, r - (int)rg.size() + 1, r);
}

void allValues(int N, int W, int *P){
	n = N, w = W;
	if(W == N * 2){
		//sub4
		vector<int> tmp(n);
		for(int i = 0; i < n; i ++)
			tmp[i] = i;
		stable_sort(tmp.begin(), tmp.end(), [&](int x, int y){
			for(int i = 0; i < n; i ++) a[i] = 0;
			a[x] = a[y] = n;
			playRound(a, b);
			return b[x] < b[y];
		});
		for(int i = 0; i < n; i ++){
			for(int j = 0; j < n; j ++)
				if(tmp[j] == i) P[i] = j + 1;
		}
	}else{
		//sub5
		vector<int> v(n);
		iota(v.begin(), v.end(), 0);
		solve(n, w, v, 1, n);
		for(int i = 0; i < n; i ++)
			P[i] = every[i];
	}
}
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