Submission #1049432

#	Time	Username	Problem	Language	Result	Execution time	Memory
1049432		aymanrs	Portal (BOI24_portal)	C++17	11 / 100	13 ms	2776 KiB

Main

#include<bits/stdc++.h>
using namespace std;
void solve(){
    int n;cin >> n;
    if(n<=2) {
        cout << "-1\n";
        return;
    }
    int x[n],y[n];
    for(int i = 0;i < n;i++) cin >> x[i] >> y[i];
    int gx = 0, gy = 0;
    for(int i = 1;i < n;i++){
        x[i] -= x[0];
        y[i] -= y[0];
        if(x[i]) gx = __gcd(gx, abs(x[i]));
        if(y[i]) gy = __gcd(gy, abs(y[i]));
    }
    if(gx && gy) cout << (long long)gy*gx << '\n';
    else cout << "-1\n";
}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    solve();
}

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