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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.     int x, y , k;
  6.     cin>>x>>y>>k;
  7.     int s=abs(x)+abs(y), ost=0, t=0;
  8.     if(x==0 && y==0) ost=1;
  9.     else if (x==0 || y==0) ost=2;
  10.     if(x*y==0) t=1;
  11.     if(k==1 && x*y==0 || k==2 && x*y!=0) cout<<s;
  12.     else if(k%4==ost){
  13.     		cout<<s+k/4+t;
  14.     	} else {
  15.     		cout<<-1;
  16.     	}
  17.     return 0;
  18. }
  19.  
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/yUnWFz
language:
C++14 (gcc 8.3)
created:
8 days ago
visibility:
public

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