Submission #379308

#	Time	Username	Problem	Language	Result	Execution time	Memory
379308		autumn_eel	Seats (IOI18_seats)	C++14	11 / 100	4100 ms	44908 KiB

seats

#include "seats.h"
#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;

static int h,w;
static vector<int>v;
static vector<int>r,c;

void give_initial_chart(int H, int W, std::vector<int> R, std::vector<int> C) {
	h=H;w=W;
	r=R;c=C;
	v=vector<int>(h*w);
	rep(i,h*w){
		v[R[i]*w+C[i]]=i;
	}
}

int swap_seats(int a, int b) {
	swap(r[a],r[b]);
	swap(c[a],c[b]);
	int cnt=0;
	int rmin,rmax,cmin,cmax;
	rmin=rmax=r[0];
	cmin=cmax=c[0];
	rep(i,h*w){
		rmin=min(rmin,r[i]);
		rmax=max(rmax,r[i]);
		cmin=min(cmin,c[i]);
		cmax=max(cmax,c[i]);
		if((rmax-rmin+1)*(cmax-cmin+1)==i+1)cnt++;
	}
	return cnt;
}

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