#include<bits/stdc++.h> using namespace std; int main(){ int m,n; cin>>m>>n; int sum1=0,sum2=0; for(m;m<=n;m++){ if(m%2==0) sum1+=m; else sum2+=m; } cout<<"偶数和"<<sum<<" "<<"奇数和"<<mus; return 0; }