Submission #488649

#	Time	Username	Problem	Language	Result	Execution time	Memory
488649		JovanB	Savrsen (COCI17_savrsen)	C++17	120 / 120	1092 ms	78576 KiB

savrsen

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

using ll = long long;
using ld = long double;

const int N = 10000000;

ll dp[N+5];

int main(){
    ios_base::sync_with_stdio(false), cin.tie(0);
    cout.precision(10);
    cout << fixed;

    int a, b;
    cin >> a >> b;
    for(int i=1; i<=b; i++) for(int j=2*i; j<=b; j+=i) dp[j] += i;
    ll res = 0;
    for(int i=a; i<=b; i++) res += abs(dp[i] - i);
    cout << res << "\n";
    return 0;
}

• Subtask 1: 120 / 120