#include<bits/stdc++.h> using namespace std; int main(){ int x; cin>>x; int y; cin>>y; int n=0; for(int i=x;i<=y;i++){ if(i%2==0) n=n+i; } cout<<n;//2550 n=0; for(int i=x;i<=y;i++){ if(i%2!=0) n=n+i; } cout<<n; return 0; }