#include<bits/stdc++.h> using namespace std; int me(int a,int b) { int m=0; for(int i=a;i<= b; i++) { m+=i; } return m; } int main() { cout<<me(1,10)<<" "; cout<<me(20,30)<<" "; cout<<me(35,45)<<" "; return 0; }