Submission #322380

#	Time	Username	Problem	Language	Result	Execution time	Memory
322380		fgojko	Savrsen (COCI17_savrsen)	C++14	30 / 120	1320 ms	39616 KiB

savrsen

#include <iostream>
#include <cmath>
#include <vector>

using namespace std;

int main()
{
    int a, b;
    cin >> a >> b;
    vector<int> vec(b+1, 1);
    vec[1] = 0;
    for(int i = 2; i <= b/2+1; ++i){
        for(int j = i*2; j <= b; j += i){
            vec[j] += i;
        }
    }
    int sum = 0;
    for(int i = a; i <= b; ++i){
        sum += abs(vec[i] - i);
    }
    cout << sum << endl;
    return 0;
}

• Subtask 1: 30 / 120