Submission #1239793

#	Time	Username	Problem	Language	Result	Execution time	Memory
1239793		nikd	자리 배치 (IOI18_seats)	C++20	17 / 100	4096 ms	39732 KiB

seats

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

int h, w;
vector<int> rn, rx, cn, cx;
vector<int> r; vector<int> c;
int sol = 0;

void give_initial_chart(int H, int W, std::vector<int> R, std::vector<int> C) {
  h = H; w = W;
  rn.resize(h*w);
  rx.resize(h*w);
  cn.resize(h*w);
  cx.resize(h*w);
  r = R; c = C;
  rn[0] = R[0]; rx[0] = R[0]; cn[0] = C[0]; cx[0] = C[0];
  sol++;
  for(int i = 1; i<h*w; i++){
    rn[i] = min(rn[i-1], R[i]);
    rx[i] = max(rx[i-1], R[i]);
    cn[i] = min(cn[i-1], C[i]);
    cx[i] = max(cx[i-1], C[i]);
    if((cx[i]-cn[i]+1)*(rx[i]-rn[i]+1) == i+1) sol++;
  }
  return;
}

int swap_seats(int a, int b) {
    if(a>b) swap(a, b);
    swap(r[a], r[b]);
    swap(c[a], c[b]);
    for(int i = a; i<=b; i++){
        if(i == 0){
            rn[0] = r[0];
            rx[0] = r[0];
            cx[0] = c[0];
            cn[0] = c[0];
            continue;
        }
        if((cx[i]-cn[i]+1)*(rx[i]-rn[i]+1) == i+1) sol--;
        rn[i] = min(rn[i-1], r[i]);
        rx[i] = max(rx[i-1], r[i]);
        cn[i] = min(cn[i-1], c[i]);
        cx[i] = max(cx[i-1], c[i]);
        if((cx[i]-cn[i]+1)*(rx[i]-rn[i]+1) == i+1) sol++;
    }
    return sol;
}

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