Submission #720579

#	Time	Username	Problem	Language	Result	Execution time	Memory
720579		veehz	Seats (IOI18_seats)	C++17	11 / 100	4053 ms	33488 KiB

seats

#include "seats.h"

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

vector<int> r,c;

void give_initial_chart(int H, int W, vector<int> R, vector<int> C) {
  r=R,c=C;
}

int swap_seats(int a, int b) {
  swap(r[a],r[b]);
  swap(c[a],c[b]);

  int min_r = r[0], max_r = r[0], min_c = c[0], max_c = c[0];
  int cnt = 1;
  for(int i=1;i<r.size();i++) {
    min_r = min(min_r, r[i]);
    max_r = max(max_r, r[i]);
    min_c = min(min_c, c[i]);
    max_c = max(max_c, c[i]);
    // cerr << (max_r - min_r) * (max_c - min_c) << ' ' << i+1 << endl;
    if((max_r - min_r + 1) * (max_c - min_c + 1) == i + 1) cnt++;
  }

  return cnt;
}

Compilation message (stderr)

seats.cpp: In function 'int swap_seats(int, int)':
seats.cpp:18:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |   for(int i=1;i<r.size();i++) {
      |               ~^~~~~~~~~

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