Submission #302850

#	Time	Username	Problem	Language	Result	Execution time	Memory
302850		iliccmarko	Savrsen (COCI17_savrsen)	C++14	120 / 120	1339 ms	39648 KiB

savrsen

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"

using namespace std;
int a, b;
int arr[10000005];


int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin>>a>>b;
    for(int i = 1;i<=10000000;i++)
    {
        for(int j = 2*i;j<=10000000;j+=i)
            arr[j]-=i;
    }
    
    ll ans = 0;
    for(int i = a;i<=b;i++)
    {
        ans+=abs(arr[i]+i);
    }
    
    cout<<ans;
    



    return 0;
}

• Subtask 1: 120 / 120