Submission #520577

#	Time	Username	Problem	Language	Result	Execution time	Memory
520577		kartel	Izvanzemaljci (COI21_izvanzemaljci)	C++14	5 / 100	3076 ms	2088 KiB

izvanzemaljci

#include <bits/stdc++.h>
//#include<ext/rope>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC target("avx2")


#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
#define F first
#define S second
#define pb push_back
#define sz(x) int(x.size())
#define el '\n'
#define all(x) x.begin(), x.end()

using namespace std;
//using namespace __gnu_pbds;
//using  namespace __gnu_cxx;

typedef long long ll;
typedef long double ld;
typedef short int si;
typedef unsigned long long ull;
//typedef tree <ll, null_type, less <ll> , rb_tree_tag, tree_order_statistics_node_update> ordered_set;

vector <ll> X[3], Y[3];

pair <pair <ll, ll>, ll> solve(vector <ll> &x, vector <ll> &y) {
    ll mn_x = 1e9, mx_x = -1e9;
    ll mn_y = 1e9, mx_y = -1e9;
    for (int i = 0; i < sz(x); i++) {
        mn_x = min(mn_x, x[i]); mn_y = min(mn_y, y[i]);
        mx_x = max(mx_x, x[i]); mx_y = max(mx_y, y[i]);
    }
    return {{mn_x, mn_y}, max(1ll, max(mx_x - mn_x, mx_y - mn_y))};
}

ll calc(pair <pair <ll, ll>, ll> a) {
    return a.S * a.S;
}

int main()
{
//    cerr.precision(7);
//    cerr << fixed;
    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);
//    in("23.in");
//    in("input.txt");
//    out("output.txt");
//    clock_t start = clock();

    int n, k;
    cin >> n >> k;
    vector <ll > x(n), y(n);
    for (int i = 0; i < n; i++) {
        cin >> x[i] >> y[i];
    }
    if (k == 1) {
        pair <pair <ll, ll>, ll> cur = solve(x, y);
        cout << cur.F.F << " " << cur.F.S << " " << cur.S << el;
        return 0;
    }
    int mxmask = 1;
    for (int i = 0; i < n; i++) {
        mxmask *= 3;
    }

    ll ans = 8e18;
    int mmask;
    for (int mask = 0; mask < mxmask; mask++) {
        for (int i = 0; i < 3; i++) {
            X[i].clear(); Y[i].clear();
        }
        for (int m = mask, i = 0; i < n; i++, m /= 3) {
            X[m % 3].pb(x[i]);
            Y[m % 3].pb(y[i]);
        }
        ll cur = 0;
        for (int i = 0; i < 3; i++) {
            cur = max(cur, calc(solve(X[i], Y[i])));
        }
        if (ans > cur) {
            ans = min(ans, cur);
            mmask = mask;
        }
    }
//    cout << ans << el;
    for (int i = 0; i < 3; i++) {
        X[i].clear(); Y[i].clear();
    }
    for (int m = mmask, i = 0; i < n; i++, m /= 3) {
        X[m % 3].pb(x[i]);
        Y[m % 3].pb(y[i]);
    }
    for (int i = 0; i < 3; i++) {
        if (!sz(X[i])) {
            cout << ((ll)2e9 + 2 * (i + 1)) << " " << ((ll)2e9 + 2 * (i + 1)) << " 1" << el;
            continue;
        }
        pair <pair <ll, ll>, ll> cur = solve(X[i], Y[i]);
        cout << cur.F.F << " " << cur.F.S << " " << cur.S << el;
    }
}

Compilation message (stderr)

izvanzemaljci.cpp: In function 'int main()':
izvanzemaljci.cpp:97:13: warning: 'mmask' may be used uninitialized in this function [-Wmaybe-uninitialized]
   97 |         X[m % 3].pb(x[i]);
      |           ~~^~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 21
• Subtask 3: 0 / 12
• Subtask 4: 0 / 30
• Subtask 5: 0 / 32