#include <bits/stdc++.h>
#define vi vector<int>
#define ve vector
#define ll long long
#define vf vector<float>
#define vll vector<pair<ll,ll>>
#define ii pair<int,int>
#define pll pair<ll,ll>
#define vvi vector<vi>
#define vii vector<ii>
#define gii greater<ii>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define INF 2e9+5
#define eps 1e-7
#define eps1 1e-25
#define optimise ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define MAX_A 1e5+5
#define V 450
using namespace std;
const int MOD = 1e9;
const int nax = 1e5+5;
//#include "seats.h"
vi r,c;
int w,h;
void give_initial_chart(int H, int W, vi R, vi C) {
r = R;
c = C;
w = W;
h = H;
}
int swap_seats(int a, int b) {
int mnr = INF, mnc = INF, mxc = 0, mxr = 0, res = 0;
swap(r[a], r[b]);
swap(c[a], c[b]);
for (int i = 0; i < w*h; ++i)
{
mnr = min(mnr, r[i]);
mxr = max(mxr, r[i]);
mnc = min(mnc, c[i]);
mxc = max(mxc, c[i]);
if( (mxr-mnr+1) * (mxc-mnc+1) == i+1) {
res++;
}
}
return res;
}
