#include<bits/stdc++.h> using namespace std; int qh(long long n,long long m){ int sumi=0; for (int i=n;i<=m;i++){ sumi+=i; } return sumi; } int main(){ long long n=1,m=10; int sumi1=qh(n,m); cout<<sumi1<<" "; n=20,m=30; int sumi2=qh(n,m); cout<<sumi2<<" "; n=35,m=45; int sumi3=qh(n,m); cout<<sumi3<<" "; return 0; }