제출 #1124151

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1124151		Mousa_Aboubaker	모자이크 (IOI24_mosaic)	C++20	29 / 100	289 ms	207628 KiB

mosaic

#include "mosaic.h"
#include <bits/stdc++.h>
using namespace std;

vector<long long> mosaic(vector<int> X, vector<int> Y,
                        vector<int> T, vector<int> B,
                        vector<int> L, vector<int> R)
{
	vector<int> x = X, y = Y, t = T, b = B, l = L, r = R;
	int n = (int)x.size(), q = (int)t.size();
	if(n <= 5000)
	{
		vector a(n, vector<int>(n));
		for(int i = 0; i < n; i++)
		{
			a[0][i] = x[i];
			a[i][0] = y[i];
		}
		for(int i = 1; i < n; i++)
			for(int j = 1; j < n; j++)
				a[i][j] = a[i - 1][j] == 0 and a[i][j - 1] == 0;
		vector pref(n + 1, vector<int>(n + 1));
		for(int i = 0; i < n; i++)
		{
			for(int j = 0; j < n; j++)
			{
				pref[i + 1][j + 1] = pref[i + 1][j] + pref[i][j + 1] - pref[i][j] + a[i][j];
			}
		}

		vector<long long> res(q);
		for(int i = 0; i < q; i++)
		{
			int i1 = t[i], j1 = l[i];
			int i2 = b[i], j2 = r[i];
			res[i] = pref[i2 + 1][j2 + 1] - pref[i1][j2 + 1] - pref[i2 + 1][j1] + pref[i1][j1];
		}

		return res;
	}

	vector<long long> pref(n);
	for(int i = 0; i < n; i++)
	{
		if(i)
			pref[i] = pref[i - 1];
		pref[i] += x[i];
	}

	vector<long long> res(q);
	for(int i = 0; i < q; i++)
	{
		res[i] = pref[r[i]] - (l[i] == 0 ? 0 : pref[l[i] - 1]);
	}

	return res;
}

• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 7 / 7
• Subtask 4: 10 / 10
• Subtask 5: 0 / 8
• Subtask 6: 0 / 22
• Subtask 7: 0 / 19
• Subtask 8: 0 / 22