#include <bits/stdc++.h>
#include "seats.h"
using namespace std;
typedef long long ll;
typedef unsigned int ul;
typedef unsigned long long ull;
#define MASK(i) (1ULL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
ll gcd(ll a, ll b){return __gcd(a, b);}
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
template <class T1, class T2>
bool maximize(T1 &a, T2 b){
if (a < b) {a = b; return true;}
return false;
}
template <class T1, class T2>
bool minimize(T1 &a, T2 b){
if (a > b) {a = b; return true;}
return false;
}
template <class T>
void printArr(T the_array_itself, string separator = " ", string finish = "\n", ostream &out = cout){
for(auto item: the_array_itself) out << item << separator;
out << finish;
}
template <class T>
void remove_dup(vector<T> &a){
sort(ALL(a));
a.resize(unique(ALL(a)) - a.begin());
}
const int INF = 1e9 + 69;
int h, w;
vector<int> r, c;
void give_initial_chart(int H, int W, vector<int> R, vector<int> C) {
h = H, w = W;
r = R; c = C;
}
int swap_seats(int a, int b) {
swap(r[a], r[b]); swap(c[a], c[b]);
int l1 = INF, r1 = -INF, l2 = INF, r2 = -INF;
int cnt = 0;
for(int i = 0; i < h * w; ++i){
minimize(l1, r[i]); minimize(l2, c[i]);
maximize(r1, r[i]); maximize(r2, c[i]);
if (i + 1 == (r1 - l1 + 1) * (r2 - l2 + 1)) cnt++;
}
return cnt;
}
// int main(void){
// ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
// clock_t start = clock();
// int n, m;cin >> n >> m;
// vector<int> r(n * m), c(n*m);
// for(int i = 0; i < n*m; ++i) cin >> r[i] >> c[i];
// give_initial_chart(n, m, r, c);
// int q; cin >> q;
// while(q--){
// int u, v; cin >> u >> v;
// cout << swap_seats(u, v) << "\n";
// }
// cerr << "Time elapsed: " << clock() - start << " ms!\n";
// return 0;
// }
