Submission #120992

#	Time	Username	Problem	Language	Result	Execution time	Memory
120992		ioilolcom	Seats (IOI18_seats)	C++14	0 / 100	4091 ms	79052 KiB

seats

#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) {
  st.clear();
	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(mr,r[i]);
		mc=min(mc,c[i]);
		mmc=max(mc,c[i]);
		st.insert({r[i],c[i]});
		if(check()) cnt++;
	}
	return cnt;
}

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