Submission #409917

#	Time	Username	Problem	Language	Result	Execution time	Memory
409917		luciocf	Seats (IOI18_seats)	C++14	11 / 100	4051 ms	40968 KiB

seats

#include <bits/stdc++.h>
#include "seats.h"

using namespace std;

int n, m;
vector<int> x, y;

void give_initial_chart(int H, int W, vector<int> R, vector<int> C)
{
	n = H, m = W;

	for (int i = 0; i < n*m; i++)
	{
		x.push_back(R[i]);
		y.push_back(C[i]);
	}
}

int sub_1(int a, int b)
{	
	int xa = x[a], ya = y[a];
	int xb = x[b], yb = y[b];

	x[a] = xb, y[a] = yb;
	x[b] = xa, y[b] = ya;

	int mn_x = x[0], mx_x = x[0];
	int mn_y = y[0], mx_y = y[0];
	int ans = 1;

	for (int i = 1; i < n*m; i++)
	{
		mn_x = min(mn_x, x[i]); mx_x = max(mx_x, x[i]);
		mn_y = min(mn_y, y[i]); mx_y = max(mx_y, y[i]);

		if ((mx_x-mn_x+1)*(mx_y-mn_y+1) == i+1) ans++;
	}

	return ans;
}

int swap_seats(int a, int b)
{
	return sub_1(a, b);
}

• Subtask 1: 5 / 5
• Subtask 2: 6 / 6
• Subtask 3: 0 / 20
• Subtask 4: 0 / 6
• Subtask 5: 0 / 33
• Subtask 6: 0 / 30