oj.uz

답안 #81787

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
81787 2018-10-26T15:26:26 Z ngot23 Savrsen (COCI17_savrsen) C++11
120 / 120
 2158 ms 78952 KB 
#include<bits/stdc++.h>
#define rep(i, a, b) for(int i=(a) ; i<=(b) ; ++i)
#define Task ""
using namespace std;
const int N=10000005;
long long d[N];

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    //freopen(Task".inp", "r", stdin);
    //freopen(Task".out", "w", stdout);
    int a, b;
    cin >> a >> b;
    rep(i, 1, b/2) {
        for(int j=i*2 ; j<=b ; j+=i) d[j]+=i;
    }
    long long ans=0;
    rep(i, a, b) {
        ans+=abs(i-d[i]);
    }
    cout << ans;
    return 0;
}

Subtask #1
120.0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 6 ms 1356 KB Output is correct
4 Correct 2133 ms 78952 KB Output is correct
5 Correct 2158 ms 78952 KB Output is correct
6 Correct 2019 ms 78952 KB Output is correct
7 Correct 1784 ms 78952 KB Output is correct
8 Correct 223 ms 78952 KB Output is correct