Submission #134765

#	Time	Username	Problem	Language	Result	Execution time	Memory
134765		Boxworld	Seats (IOI18_seats)	C++14	11 / 100	4082 ms	40868 KiB

seats

#include "seats.h"
#include <bits/stdc++.h>
using namespace std;
const int maxN=1000100;
struct node{int x,y;}p[maxN];
int h,w;
void give_initial_chart(int H, int W, std::vector<int> R, std::vector<int> C) {
	h=H;w=W;
	for (int i=0;i<H*W;i++){
		p[i].x=R[i];p[i].y=C[i];
	}
}

int swap_seats(int a, int b){
	int t=a,ans=0;
	swap(p[a],p[b]);
	int Hi=p[0].x,Hx=p[0].x,Wi=p[0].y,Wx=p[0].y;
	for (int i=0;i<h*w;i++){
		if (p[i].x<Hi)Hi=p[i].x;
		if (p[i].x>Hx)Hx=p[i].x;
		if (p[i].y<Wi)Wi=p[i].y;
		if (p[i].y>Wx)Wx=p[i].y;
		if ((Hx-Hi+1)*(Wx-Wi+1)==i+1)ans++;
	}
	return ans;
}

Compilation message (stderr)

seats.cpp: In function 'int swap_seats(int, int)':
seats.cpp:15:6: warning: unused variable 't' [-Wunused-variable]
  int t=a,ans=0;
      ^

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