Submission #1133777

#	Time	Username	Problem	Language	Result	Execution time	Memory
1133777		lopkus	Savrsen (COCI17_savrsen)	C++20	120 / 120	1032 ms	78664 KiB

savrsen

#include <bits/stdc++.h>

using namespace std;

const int N = 1e7 + 5;

vector<long long> D(N, 0);

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    for(int i = 1; i < N; i++) {
        for(int j = i; j < N; j+= i) {
            D[j] += i;
        }
    }
    for(int i = 1; i < N; i++) {
        D[i] = D[i - 1] + abs((D[i] - i) - i);
    }
    int l, r;
    cin >> l >> r;
    cout << D[r] - D[l - 1];
}

• Subtask 1: 120 / 120