Submission #1208625

#	Time	Username	Problem	Language	Result	Execution time	Memory
1208625		loiiii12358	Seats (IOI18_seats)	C++20	11 / 100	4096 ms	24116 KiB

seats

#include "seats.h"
#include <bits/stdc++.h>
using namespace std;

int h,w;
vector<pair<int,int>> seats;

void give_initial_chart(int H, int W, std::vector<int> R, std::vector<int> C) {
  h=H;w=W;
  seats.resize(H*W);
  for(int i=0;i<H*W;i++){
    seats[i]={R[i],C[i]};
  }
}

int swap_seats(int a, int b) {
  swap(seats[a],seats[b]);
  int mx=1e9,Mx=-1,my=1e9,My=-1,ans=0;
  for(int i=0;i<h*w;i++){
    mx=min(mx,seats[i].first);
    Mx=max(Mx,seats[i].first);
    my=min(my,seats[i].second);
    My=max(My,seats[i].second);
    if((Mx-mx+1)*(My-my+1)==i+1){
      ans++;
    }
  }
  return ans;
}

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