제출 #1219476

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1219476		omsincoconut	Portal (BOI24_portal)	C++17	11 / 100	13 ms	1216 KiB

Main

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int N;
    cin >> N;

    if (N <= 2) {
        cout << -1;
        return 0;
    }

    int x[N+1], y[N+1];
    for (int i = 1; i <= N; i++) cin >> x[i] >> y[i];

    pair<int, int> minpos = {x[1], y[1]};
    for (int i = 2; i <= N; i++) minpos = min(minpos, make_pair(x[i], y[i]));

    ll sx = 0, sy = 0;
    for (int i = 1; i <= N; i++) {
        ll dx = abs(minpos.first - x[i]);
        ll dy = abs(minpos.second - y[i]);
        if (dx != 0 && dy == 0) sx = gcd(sx, dx);
        if (dy != 0 && dx == 0) sy = gcd(sy, dy);
    }

    cout << (sx*sy == 0 ? -1 : sx*sy);

    return 0;
}

/*
3
1 1
1 3
3 2

5
0 0
1 0
-1 0
0 1
0 -1

1
1 -1
*/

• Subtask 1: 1 / 1
• Subtask 2: 0 / 10
• Subtask 3: 10 / 10
• Subtask 4: 0 / 29
• Subtask 5: 0 / 15
• Subtask 6: 0 / 35