답안 #998082

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
998082	2024-06-13T09:26:07 Z	arbuzick	Izvanzemaljci (COI21_izvanzemaljci)	C++17	26 / 100	3000 ms	8268 KB

izvanzemaljci

#include <bits/stdc++.h>
#define int long long

using namespace std;

constexpr long long inf = (long long)1e18 + 7;

constexpr long long vl = 3000000001;

struct Point {
    int x, y;

    Point(int _x = 0, int _y = 0) {
        x = _x, y = _y;
    }
};

struct Answer {
    vector<pair<Point, int>> squares;
    int mx;

    Answer() {
        mx = 0;
    }

    void add(Point p, int side) {
        squares.emplace_back(p, side);
        mx = max(mx, side);
    }

    bool operator<(Answer b) {
        return mx < b.mx;
    }
};

Answer split2(vector<Point> a, long long mn_x, long long mx_x, long long mn_y, long long mx_y) {
    auto check = [&](Answer ans) -> bool {
        for (int i = 0; i < (int)ans.squares.size(); ++i) {
            if (ans.squares[i].first.x <= mn_x || ans.squares[i].first.x + ans.squares[i].second >= mx_x) {
                return false;
            }
            if (ans.squares[i].first.y < mn_y || ans.squares[i].first.y + ans.squares[i].second >= mx_y) {
                return false;
            }
        }
        return true;
    };
    int n = a.size();
    sort(a.begin(), a.end(), [&](Point a, Point b) -> bool {
        return a.x < b.x;
    });
    vector<int> pr_mn(n + 1, inf), pr_mx(n + 1, -inf), suf_mn(n + 1, inf), suf_mx(n + 1, -inf);
    for (int i = 0; i < n; ++i) {
        pr_mn[i + 1] = min(pr_mn[i], a[i].y);
        pr_mx[i + 1] = max(pr_mx[i], a[i].y);
    }
    for (int i = n - 1; i >= 0; --i) {
        suf_mn[i] = min(suf_mn[i + 1], a[i].y);
        suf_mx[i] = max(suf_mx[i + 1], a[i].y);
    }
    Answer ans;
    ans.add(Point(0, 0), inf);
    for (int i = 0; i + 1 < n; ++i) {
        if (a[i].x == a[i + 1].x) {
            continue;
        }
        Answer ans_nw;
        int side1 = max(1LL, max(a[i].x - a[0].x, pr_mx[i + 1] - pr_mn[i + 1]));
        Point p1(a[i].x - side1, pr_mn[i + 1]);
        if (p1.x <= mn_x) {
            p1.x = a[i + 1].x - 1 - side1;
            if (p1.x <= mn_x) {
                continue;
            }
        }
        if (p1.y + side1 >= mx_y) {
            p1.y = pr_mx[i + 1] - side1;
        }
        ans_nw.add(p1, side1);
        int side2 = max(1LL, max(a[n - 1].x - a[i + 1].x, suf_mx[i + 1] - suf_mn[i + 1]));
        Point p2(a[i + 1].x, suf_mn[i + 1]);
        if (p2.x + side2 >= mx_x) {
            p2.x = max(a[i].x + 1, a[n - 1].x - side2);
            if (p2.x + side2 >= mx_x) {
                continue;
            }
        }
        if (p2.y + side2 >= mx_y) {
            p2.y = suf_mx[i + 1] - side2;
        }
        ans_nw.add(p2, side2);
        if (check(ans_nw) && ans_nw < ans) {
            ans = ans_nw;
        }
    }
    int side = max(1LL, max(a[n - 1].x - a[0].x, pr_mx[n] - pr_mn[n]));
    Point p(a[0].x, pr_mn[n]);
    if (p.x + side >= mx_x) {
        p.x = a[n - 1].x - side;
    }
    if (p.y + side >= mx_y) {
        p.y = pr_mx[n] - side;
    }
    Answer ans_nw;
    ans_nw.add(p, side);
    if (p.x - 2 >= mn_x && p.y - 2 >= mn_y) {
        ans_nw.add(Point(p.x - 2, p.y - 2), 1);
        if (check(ans_nw) && ans_nw < ans) {
            ans = ans_nw;
        }
    } else if (p.x - 2 >= mn_x && p.y + side + 2 <= mx_y) {
        ans_nw.add(Point(p.x - 2, p.y + side + 1), 1);
        if (check(ans_nw) && ans_nw < ans) {
            ans = ans_nw;
        }
    } else if (p.x + side + 2 <= mx_x && p.y - 2 >= mn_y) {
        ans_nw.add(Point(p.x + side + 1, p.y - 2), 1);
        if (check(ans_nw) && ans_nw < ans) {
            ans = ans_nw;
        }
    } else if (p.x + side + 2 <= mx_x && p.y + side + 2 <= mx_y) {
        ans_nw.add(Point(p.x + side + 1, p.y + side + 1), 1);
        if (check(ans_nw) && ans_nw < ans) {
            ans = ans_nw;
        }
    } else {
        exit(1);
    }
    return ans;
}

Answer get_ans(int n, vector<Point> a) {
    auto check = [&](Answer ans) -> bool {
        for (int i = 0; i < 3; ++i) {
            if (ans.squares[i].first.x < -vl || ans.squares[i].first.x > vl) {
                return false;
            }
            if (ans.squares[i].first.y < -vl || ans.squares[i].first.y > vl) {
                return false;
            }
        }
        for (int i = 0; i < 3; ++i) {
            for (int j = i + 1; j < 3; ++j) {
                if (min(ans.squares[i].first.x + ans.squares[i].second, ans.squares[j].first.x + ans.squares[j].second) >= max(ans.squares[i].first.x, ans.squares[j].first.x) &&
                    min(ans.squares[i].first.y + ans.squares[i].second, ans.squares[j].first.y + ans.squares[j].second) >= max(ans.squares[i].first.y, ans.squares[j].first.y)) {
                    return false;
                }
            }
        }
        return true;
    };

    sort(a.begin(), a.end(), [&](Point a, Point b) -> bool {
        return a.x < b.x;
    });
    Answer ans;
    ans.add(Point(0, 0), inf);
    int mn_y = inf, mx_y = -inf;
    for (int i = 0; i < n; ++i) {
        mn_y = min(mn_y, a[i].y);
        mx_y = max(mx_y, a[i].y);
        if (i == n - 1 || a[i].x == a[i + 1].x) {
            continue;
        }
        vector<Point> b;
        for (int j = i + 1; j < n; ++j) {
            b.push_back(a[j]);
        }
        Answer ans1_ans = split2(b, a[i].x, vl, -vl, vl);
        for (int j = 0; j < (int)b.size(); ++j) {
            swap(b[j].x, b[j].y);
        }
        Answer ans2_ans = split2(b, -vl, vl, a[i].x, vl);
        for (int i = 0; i < 2; ++i) {
            swap(ans2_ans.squares[i].first.x, ans2_ans.squares[i].first.y);
        }
        if (ans2_ans < ans1_ans) {
            ans1_ans = ans2_ans;
        }
        int side = max(1LL, max(a[i].x - a[0].x, mx_y - mn_y));
        ans1_ans.add(Point(a[i].x - side, mn_y), side);
        if (ans1_ans < ans) {
            ans = ans1_ans;
        }
    }
    int side = max(1LL, max(a[n - 1].x - a[0].x, mx_y - mn_y));
    Point p(a[0].x, mn_y);
    Answer ans_nw;
    ans_nw.add(p, side);
    if (p.x - 4 >= -vl && p.y - 4 >= -vl) {
        ans_nw.add(Point(p.x - 2, p.y - 2), 1);
        ans_nw.add(Point(p.x - 4, p.y - 4), 1);
        if (ans_nw < ans) {
            ans = ans_nw;
        }
    } else if (p.x - 4 >= -vl && p.y + 4 <= vl) {
        ans_nw.add(Point(p.x - 2, p.y + 1), 1);
        ans_nw.add(Point(p.x - 4, p.y + 3), 1);
        if (ans_nw < ans) {
            ans = ans_nw;
        }
    } else if (p.x + 4 <= vl && p.y - 4 >= vl) {
        ans_nw.add(Point(p.x + 1, p.y - 2), 1);
        ans_nw.add(Point(p.x + 3, p.y - 4), 1);
        if (ans_nw < ans) {
            ans = ans_nw;
        }
    } else if (p.x + 4 <= vl && p.y + 4 <= vl) {
        ans_nw.add(Point(p.x + 1, p.y + 1), 1);
        ans_nw.add(Point(p.x + 3, p.y + 3), 1);
        if (ans_nw < ans) {
            ans = ans_nw;
        }
    } else {
        exit(1);
    }

    mn_y = inf, mx_y = -inf;
    for (int i = n - 1; i > 0; --i) {
        mn_y = min(mn_y, a[i].y);
        mx_y = max(mx_y, a[i].y);
        if (i == 0 || a[i].x == a[i - 1].x) {
            continue;
        }
        vector<Point> b;
        for (int j = 0; j < i; ++j) {
            b.push_back(a[j]);
        }
        Answer ans1_ans = split2(b, -vl, a[i].x, -vl, vl);
        for (int j = 0; j < (int)b.size(); ++j) {
            swap(b[j].x, b[j].y);
        }
        Answer ans2_ans = split2(b, -vl, vl, -vl, a[i].x);
        for (int i = 0; i < 2; ++i) {
            swap(ans2_ans.squares[i].first.x, ans2_ans.squares[i].first.y);
        }
        if (ans2_ans < ans1_ans) {
            ans1_ans = ans2_ans;
        }
        int side = max(1LL, max(a[n - 1].x - a[i].x, mx_y - mn_y));
        ans1_ans.add(Point(a[i].x, mn_y), side);
        if (ans1_ans < ans) {
            ans = ans1_ans;
        }
    }

    assert(check(ans));

    return ans;
}

void solve() {
    int n, k;
    cin >> n >> k;
    vector<Point> a(n);
    for (int i = 0; i < n; ++i) {
        cin >> a[i].x >> a[i].y;
    }
    if (k == 1) {
        int mn_x = inf, mx_x = -inf, mn_y = inf, mx_y = -inf;
        for (int i = 0; i < n; ++i) {
            mn_x = min(mn_x, a[i].x);
            mx_x = max(mx_x, a[i].x);
            mn_y = min(mn_y, a[i].y);
            mx_y = max(mx_y, a[i].y);
        }
        cout << mn_x << ' ' << mn_y << ' ' << max(1LL, max(mx_x - mn_x, mx_y - mn_y)) << '\n';
    } else if (k == 2) {
        auto ans1 = split2(a, -vl, vl, -vl, vl);
        for (int i = 0; i < n; ++i) {
            swap(a[i].x, a[i].y);
        }
        auto ans2 = split2(a, -vl, vl, -vl, vl);
        for (int i = 0; i < k; ++i) {
            swap(ans2.squares[i].first.x, ans2.squares[i].first.y);
        }
        if (ans1 < ans2) {
            for (int i = 0; i < k; ++i) {
                cout << ans1.squares[i].first.x << ' ' << ans1.squares[i].first.y << ' ' << ans1.squares[i].second << '\n';
            }
        } else {
            for (int i = 0; i < k; ++i) {
                cout << ans2.squares[i].first.x << ' ' << ans2.squares[i].first.y << ' ' << ans2.squares[i].second << '\n';
            }
        }
    } else if (k == 3) {
        auto ans1 = get_ans(n, a);
        for (int i = 0; i < n; ++i) {
            swap(a[i].x, a[i].y);
        }
        auto ans2 = get_ans(n, a);
        for (int i = 0; i < k; ++i) {
            swap(ans2.squares[i].first.x, ans2.squares[i].first.y);
        }
        auto check = [&](Answer ans) -> bool {
            for (int i = 0; i < k; ++i) {
                if (ans.squares[i].first.x < -vl || ans.squares[i].first.x > vl) {
                    return false;
                }
                if (ans.squares[i].first.y < -vl || ans.squares[i].first.y > vl) {
                    return false;
                }
            }
            for (int i = 0; i < k; ++i) {
                for (int j = i + 1; j < k; ++j) {
                    if (min(ans.squares[i].first.x + ans.squares[i].second, ans.squares[j].first.x + ans.squares[j].second) >= max(ans.squares[i].first.x, ans.squares[j].first.x) &&
                        min(ans.squares[i].first.y + ans.squares[i].second, ans.squares[j].first.y + ans.squares[j].second) >= max(ans.squares[i].first.y, ans.squares[j].first.y)) {
                        return false;
                    }
                }
            }
            return true;
        };
        assert(check(ans1));
        assert(check(ans2));
        if (ans1 < ans2) {
            for (int i = 0; i < k; ++i) {
                cout << ans1.squares[i].first.x << ' ' << ans1.squares[i].first.y << ' ' << ans1.squares[i].second << '\n';
            }
        } else {
            for (int i = 0; i < k; ++i) {
                cout << ans2.squares[i].first.x << ' ' << ans2.squares[i].first.y << ' ' << ans2.squares[i].second << '\n';
            }
        }
    }
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
    return 0;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	344 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	14 ms	1880 KB	Output is correct
8	Correct	15 ms	1884 KB	Output is correct
9	Correct	15 ms	1884 KB	Output is correct
10	Correct	16 ms	1880 KB	Output is correct
11	Correct	15 ms	1880 KB	Output is correct

Subtask #2
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	344 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	45 ms	6672 KB	Output is correct
11	Correct	44 ms	6648 KB	Output is correct
12	Correct	47 ms	6664 KB	Output is correct
13	Correct	44 ms	6668 KB	Output is correct
14	Correct	49 ms	6648 KB	Output is correct
15	Correct	44 ms	6644 KB	Output is correct
16	Correct	45 ms	6644 KB	Output is correct
17	Correct	41 ms	6140 KB	Output is correct
18	Correct	39 ms	5980 KB	Output is correct
19	Correct	36 ms	5468 KB	Output is correct
20	Correct	36 ms	5760 KB	Output is correct
21	Correct	53 ms	6648 KB	Output is correct
22	Correct	44 ms	6652 KB	Output is correct
23	Correct	43 ms	6656 KB	Output is correct

Subtask #3
0 / 12.0

#	결과	메모리	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	348 KB	Output is correct
6	Correct	348 KB	Output is correct
7	Correct	348 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	348 KB	Output is correct
11	Correct	348 KB	Output is correct
12	Correct	348 KB	Output is correct
13	Correct	348 KB	Output is correct
14	Incorrect	348 KB	Output isn't correct
15	Halted	0 KB	-

Subtask #4
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	260 ms	664 KB	Output is correct
2	Correct	267 ms	596 KB	Output is correct
3	Correct	259 ms	596 KB	Output is correct
4	Correct	261 ms	592 KB	Output is correct
5	Correct	255 ms	536 KB	Output is correct
6	Correct	261 ms	668 KB	Output is correct
7	Correct	267 ms	592 KB	Output is correct
8	Correct	273 ms	592 KB	Output is correct
9	Correct	259 ms	860 KB	Output is correct
10	Correct	259 ms	668 KB	Output is correct
11	Correct	264 ms	548 KB	Output is correct
12	Correct	269 ms	852 KB	Output is correct
13	Correct	214 ms	592 KB	Output is correct
14	Correct	207 ms	652 KB	Output is correct
15	Correct	215 ms	852 KB	Output is correct
16	Correct	210 ms	652 KB	Output is correct
17	Correct	210 ms	596 KB	Output is correct
18	Correct	223 ms	664 KB	Output is correct
19	Correct	210 ms	532 KB	Output is correct
20	Correct	209 ms	656 KB	Output is correct
21	Incorrect	242 ms	596 KB	Output isn't correct
22	Halted	0 ms	0 KB	-

Subtask #5
0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	260 ms	540 KB	Output is correct
2	Correct	260 ms	596 KB	Output is correct
3	Correct	259 ms	592 KB	Output is correct
4	Correct	267 ms	596 KB	Output is correct
5	Correct	267 ms	532 KB	Output is correct
6	Correct	259 ms	596 KB	Output is correct
7	Correct	264 ms	540 KB	Output is correct
8	Correct	259 ms	592 KB	Output is correct
9	Correct	247 ms	556 KB	Output is correct
10	Correct	248 ms	856 KB	Output is correct
11	Correct	262 ms	556 KB	Output is correct
12	Correct	269 ms	596 KB	Output is correct
13	Correct	267 ms	812 KB	Output is correct
14	Execution timed out	3059 ms	8268 KB	Time limit exceeded
15	Halted	0 ms	0 KB	-

답안 #998082

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 21.0 / 21.0

Subtask #3 0 / 12.0

Subtask #4 0 / 30.0

Subtask #5 0 / 32.0

Subtask #1
5.0 / 5.0

Subtask #2
21.0 / 21.0

Subtask #3
0 / 12.0

Subtask #4
0 / 30.0

Subtask #5
0 / 32.0