#include "seats.h"
#include <bits/stdc++.h>
using namespace std;
const int maxnm=1e6;
#define pii pair<int,int>
#define fs first
#define sc second
int n,m,cnt;
vector<int> r,c;
pair<pii,pii> a[maxnm+1];
pair<pii,pii> mrg(pair<pii,pii> p1,pair<pii,pii> p2){
return {{min(p1.fs.fs,p2.fs.fs),max(p1.fs.sc,p2.fs.sc)},{min(p1.sc.fs,p2.sc.fs),max(p1.sc.sc,p2.sc.sc)}};
}
void give_initial_chart(int H, int W, std::vector<int> R, std::vector<int> C) {
r=c={0};
for(int i:R)r.push_back(i);
for(int i:C)c.push_back(i);
n=H,m=W;
a[0]={{1e9,-1e9},{1e9,-1e9}};
for(int i=1;i<=n*m;i++){
a[i]=mrg(a[i-1],{{r[i],r[i]},{c[i],c[i]}});
cnt+=1LL*(a[i].fs.sc-a[i].fs.fs+1)*(a[i].sc.sc-a[i].sc.fs+1)==i;
}
}
int swap_seats(int x, int y) {
if(x>y)swap(x,y);
x++;y++;
swap(r[x],r[y]);
swap(c[x],c[y]);
for(int i=x;i<y;i++){
cnt-=1LL*(a[i].fs.sc-a[i].fs.fs+1)*(a[i].sc.sc-a[i].sc.fs+1)==i;
a[i]=mrg(a[i-1],{{r[i],r[i]},{c[i],c[i]}});
cnt+=1LL*(a[i].fs.sc-a[i].fs.fs+1)*(a[i].sc.sc-a[i].sc.fs+1)==i;
}
return cnt;
}
