#include<bits/stdc++.h> using namespace std; int main() { int a,j; cin>>a; int b=a%5; if(b1) j=a-1; if(b2) j=a-2; if(b0) j=a-0; if(b3) j=a+2; if(b==4) j=a+1; cout<<j; return 0; }