Submission #1158574

#	Time	Username	Problem	Language	Result	Execution time	Memory
1158574		The_Samurai	축구 경기장 (IOI23_soccer)	C++20	6 / 100	197 ms	31772 KiB

soccer

#include "soccer.h"
#include "bits/stdc++.h"
using namespace std;

struct dsu {
    vector<int> p, size;

    void init(int n) {
        p.assign(n + 1, 0);
        size.assign(n + 1, 1);
        for (int i = 1; i <= n; i++) p[i] = i;
    }

    int get(int a) {
        return (p[a] == a ? a : p[a] = get(p[a]));
    }

    void add(int a, int b) {
        a = get(a);
        b = get(b);
        if (a == b) return;
        if (size[a] > size[b]) swap(a, b);
        size[b] += size[a];
        p[a] = b;
    }
};

int biggest_stadium(int n, std::vector<std::vector<int>> a) {
    pair<int, int> tr = make_pair(-1, -1);
    for (int i = 0; i < n; i++) for (int j = 0; j < n; j++) {
        if (a[i][j]) tr = make_pair(i, j);
    }
    if (tr.first == -1) return n * n;
    auto [x, y] = tr;
    int ans = max(x, n - x - 1) * n + max(y, n - y - 1);
    ans = max(ans, max(y, n - y - 1) * n + max(x, n - x - 1));

    ans = max(ans, n * n - min(x + 1, n - x) * min(y + 1, n - y));
    return ans;
}

• Subtask 0: 0 / 0
• Subtask 1: 6 / 6
• Subtask 2: 0 / 8
• Subtask 3: 0 / 22
• Subtask 4: 0 / 18
• Subtask 5: 0 / 16
• Subtask 6: 0 / 30