# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
997322 | 2024-06-12T05:47:33 Z | yeediot | Portal (BOI24_portal) | C++17 | 0 ms | 0 KB |
#include <iostream> using namespace std; #define int long long int main() { int n; cin >> n; if(n<=2){ cout<<-1; return 0; } int x,y,xx,yy,xxx,yyy; cin>>x>>y>>xx>>yy>>xxx>>yyy; int dick=abs((xx-x)*(yyy-y)-(yy-y)*(xxx-x)); cout<<(dick==0?-1:dick); }