This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "seats.h"
#include <bits/stdc++.h>
using namespace std;
std::vector<int> r;
std::vector<int> c;
int mr=1e9;
int mc=1e9;
int mmc,mmr;
set<pair<int,int> > st;
bool check(){
for(int i=mr; i<=mmr; i++) {
for(int j=mc; j<=mmc; j++) {
if(!st.count({i,j})) {
return false;
}
}
}
return true;
}
int h,w;
void give_initial_chart(int H, int W, std::vector<int> R, std::vector<int> C) {
r=R;
c=C;
h=H;
w=W;
}
int swap_seats(int a, int b) {
swap(r[a],r[b]);
swap(c[a],c[b] );
int cnt=0;
for(int i=0; i<=h*w-1; i++) {
mr=min(mr,r[i]);
mmr=max(mmr,r[i]);
mc=min(mc,c[i]);
mmc=max(mc,c[i]);
st.insert({r[i],c[i]});
if(check()) cnt++;
}
return cnt;
}
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