Submission #994745

#	Time	Username	Problem	Language	Result	Execution time	Memory
994745		hmm789	Portal (BOI24_portal)	C++14	10 / 100	15 ms	2020 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define MOD 1000000007

int gcd(int a, int b) {
	if(a > b) swap(a, b);
	if(a == 0) return b;
	else return gcd(a, b%a);
}

int32_t main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	int n;
	cin >> n;
	int x[n], y[n], gx = 0, gy = 0;
	for(int i = 0; i < n; i++) cin >> x[i] >> y[i];
	for(int i = 1; i < n; i++) {
		gx = gcd(abs(x[i]-x[i-1]), gx);
		gy = gcd(abs(y[i]-y[i-1]), gy);
	}
	if(gx*gy == 0) cout << -1;
	else cout << gx*gy;
}

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