Submission #580547

#	Time	Username	Problem	Language	Result	Execution time	Memory
580547		Vanilla	Seats (IOI18_seats)	C++17	11 / 100	4101 ms	40752 KiB

seats

#include <bits/stdc++.h>
#include "seats.h"
typedef long long int64;
using namespace std;
vector<int> r,c;
const int maxn = 1e4 + 2;
int n = 0, m = 0;

void give_initial_chart(int H, int W, vector<int> R, vector<int> C) {
  for (int i = 0; i < H * W; i++){
    R[i]++;
    C[i]++;
  }
  r = R, c = C, n = H, m = W;

}

int swap_seats(int a, int b) {
  swap(r[a], r[b]);
  swap(c[a], c[b]);
  int ll = c[0], rr = c[0], uu = r[0], dd = r[0];
  int rs = 1;
  for (int i = 1; i < n * m; i++){
    ll = min(ll, c[i]);
    rr = max(rr, c[i]);
    uu = min(uu, r[i]);
    dd = max(dd, r[i]);
    // cout << i << " " << ll << " " << rr << " " << uu << " " << dd << "\n";
    if ((rr - ll + 1) * (dd - uu + 1) == i + 1) rs++;
  }
  return rs;
}

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