Submission #109696

#	Time	Username	Problem	Language	Result	Execution time	Memory
109696		polyfish	Seats (IOI18_seats)	C++14	11 / 100	4085 ms	40840 KiB

seats

//Pantyhose(black) + glasses = infinity
#include "seats.h"
#include <bits/stdc++.h>
using namespace std;

#define debug(x) cerr << #x << " = " << x << '\n';
#define BP() cerr << "OK!\n";
#define PR(A, n) {cerr << #A << " = "; for (int _=1; _<=n; ++_) cerr << A[_] << ' '; cerr << '\n';}
#define PR0(A, n) {cerr << #A << " = "; for (int _=0; _<n; ++_) cerr << A[_] << ' '; cerr << '\n';}

const int MAX_N = 1000002;

int h, w, n;
pair<int, int> p[MAX_N];

void give_initial_chart(int H, int W, std::vector<int> R, std::vector<int> C) {
    h = H;
    w = W;
    n = R.size();
    for (int i=0; i<n; ++i)
        p[i] = {R[i], C[i]};
}

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

    int res = 0;
    int l = h, r = 0, u = w, d = 0;

    for (int i=0; i<n; ++i) {
        l = min(l, p[i].first);
        r = max(r, p[i].first);
        u = min(u, p[i].second);
        d = max(d, p[i].second);

        res += ((r - l + 1) * (d - u + 1)==i+1);
    }

    return res;
}

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