Submission #777166

#	Time	Username	Problem	Language	Result	Execution time	Memory
777166		GusterGoose27	Seats (IOI18_seats)	C++17	11 / 100	4064 ms	40752 KiB

seats

#include "seats.h"

#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pii;

const int MAXN = 1e6+5;

int h, w, n;
pii points[MAXN];

void give_initial_chart(int H, int W, vector<int> R, vector<int> C) {
    h = H;
    w = W;
    n = h*w;
    for (int i = 0; i < n; i++) {
        points[i] = pii(R[i], C[i]);
    }
}

int swap_seats(int a, int b) {
    swap(points[a], points[b]);
    int l = h, r = 0, u = w, d = 0;
    int ans = 0;
    for (int i = 0; i < n; i++) {
        l = min(l, points[i].first);
        r = max(r, points[i].first);
        u = min(u, points[i].second);
        d = max(d, points[i].second);
        ans += ((r-l+1)*(d-u+1) == i+1);
    }
    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