Submission #403479

#	Time	Username	Problem	Language	Result	Execution time	Memory
403479		InternetPerson10	Seats (IOI18_seats)	C++14	11 / 100	4094 ms	40740 KiB

seats

#include "seats.h"
#include <bits/stdc++.h>

using namespace std;

vector<pair<int, int>> v;

void give_initial_chart(int H, int W, vector<int> R, vector<int> C) {
	vector<pair<int, int>>().swap(v);
	v.resize(H*W);
	for(int i = 0; i < H*W; i++) {
  		v[i] = {R[i], C[i]};
  	}
}

int swap_seats(int a, int b) {
	int ans = 1;
	swap(v[a], v[b]);
	int minX, minY, maxX, maxY;
	minX = maxX = v[0].first;
	minY = maxY = v[0].second;
	for(int i = 1; i < v.size(); i++) {
		minX = min(minX, v[i].first);
		maxX = max(maxX, v[i].first);
		minY = min(minY, v[i].second);
		maxY = max(maxY, v[i].second);
		if((maxX-minX+1)*(maxY-minY+1) == i+1) ans++;
	}
	return ans;
}

Compilation message (stderr)

seats.cpp: In function 'int swap_seats(int, int)':
seats.cpp:22:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |  for(int i = 1; i < v.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