#include <bits/stdc++.h> using namespace std; int main(){ int n; cin >> n; if(n == 0 || n % 2 == 1){cout << 0 << " " << 0 << endl;} }

#include<bits/stdc++.h> using namespace std; int main(){ long int a; cin>>a; if(a1||a%21){//没有最大值和最小值// cout<<0<<" "<<0; } else{ cout<<ceil(1.0*a/4)<<" "<<a/2;// 向上取整// } }

#include<iostream> using namespace std; int main(){ int a,b,c; cin>>c; if(c%2!=0){ cout<<0<<' '<<0; }else{ if(c%4==0){ a=c/4; }else{ a=c/4+1; } b=c/2; cout<<a<<' '<<b; } return 0; }