oj.uz

답안 #62939

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
62939 2018-07-31T01:53:00 Z MatheusLealV 보물 찾기 (CEOI13_treasure2) C++17
100 / 100
 3 ms 776 KB 
#include "treasure.h"
#include <bits/stdc++.h>
using namespace std;
 
int ans[150][150], col[150], n, pref[150][150];
 
int save[102][102];
 
int query(int x, int y, int xi, int yi)
{
	if(save[xi][yi] != -1) return save[xi][yi];
 
	return save[xi][yi] = countTreasure(x, y, xi, yi);
}
 
void solve(int l, int r, int k)
{
	if(!k) return;
 
	if(l == r) col[l] = k;
 
	else
	{
		int mid = (l + r)/2;
 
		int A = query(1, 1, n, mid);
 
		for(int i = 1; i < mid; i++) A -= col[i];
 
		solve(l, mid, A), solve(mid + 1, r, k - A);
	}
}
 
int qtd = 0;
 
void solve2(int id, int l, int r, int k)
{
	if(!k) return;
 
	if(k == r - l + 1)
	{
		for(int i = l; i <= r; i++) ans[i][id] = 1;
 
		return;
	}
 
	if(l == r) ans[l][id] = k;
 
	else
	{
		int mid = (l + r)/2;
 
		int A = query(1, 1, mid, id);
 
		qtd ++;
 
		for(int i = 1; i <= id; i++)
			for(int j = 1; j <= mid; j++)
				A -= ans[j][i];
 
		solve2(id, l, mid, A), solve2(id, mid + 1, r, k - A);
	}
}
 
void findTreasure (int N)
{
	n = N;
 
	memset(save, -1, sizeof save);
 
	//solve(1, N, query(1, 1, N, N));
 
	int mid = (1 + n)/2;

	for(int i = n; i >= 1; i--)
	{
		for(int j = n; j >= 1; j--)
		{
			if(i >= mid and j >= mid) pref[i][j] = countTreasure(1, 1, i, j);

			else if(i >= mid and j <= mid)
				pref[i][j] = pref[i][n] - countTreasure(1, j + 1, i, n);

			else if(i <= mid and j >= mid)
				pref[i][j] = pref[n][j] - countTreasure(i + 1, 1, n, j);

			else if(i <= mid and j <= mid)
				pref[i][j] = -1*(pref[n][n] - countTreasure(i + 1, j + 1, n, n) - pref[i][n] - pref[n][j]);
		}
	}

	for(int i = 1; i <= n; i++)
		for(int j = 1; j <= n; j++)
			if(pref[i][j] - pref[i - 1][j] - pref[i][j - 1] + pref[i - 1][j - 1] > 0)
				Report(i, j);

}

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct - N = 5, K = 289, score = 10
2 Correct 2 ms 376 KB Output is correct - N = 10, K = 4475, score = 10
3 Correct 2 ms 396 KB Output is correct - N = 15, K = 22289, score = 10
4 Correct 3 ms 520 KB Output is correct - N = 16, K = 28928, score = 10
5 Correct 2 ms 520 KB Output is correct - N = 55, K = 4005289, score = 10
6 Correct 2 ms 520 KB Output is correct - N = 66, K = 8305803, score = 10
7 Correct 2 ms 600 KB Output is correct - N = 77, K = 15383161, score = 10
8 Correct 3 ms 600 KB Output is correct - N = 88, K = 26244416, score = 10
9 Correct 3 ms 776 KB Output is correct - N = 99, K = 42032201, score = 10
10 Correct 2 ms 776 KB Output is correct - N = 100, K = 43760000, score = 10