Submission #97091

#	Time	Username	Problem	Language	Result	Execution time	Memory
97091		karlopuh	Savrsen (COCI17_savrsen)	C++14	120 / 120	2842 ms	78712 KiB

savrsen

#include <bits/stdc++.h>
using namespace std;

int a,b;
long long int sum[10000008];
long long int ans;

int main(){
	
	cin>>a>>b;
	for(int i=1;i<=b;i++){
		for(int j=i;j<=b;j+=i){
			sum[j]+=i;
		}
		
	}
	
	for(int i=a;i<=b;i++){
		ans=ans+abs(i+i-sum[i]);
	}
	
	cout<<ans;
}

• Subtask 1: 120 / 120