Submission #1062806

#	Time	Username	Problem	Language	Result	Execution time	Memory
1062806		dimasnbayu	Savrsen (COCI17_savrsen)	C++14	120 / 120	592 ms	78692 KiB

savrsen

#include<bits/stdc++.h>
using namespace std;
#define int long long
int sum[10000005];
signed main(){
    int n,m; cin>>n>>m;
    for(int i=2;i<=10000000;i++){
        for(int j=i+i;j<=10000000;j+=i) sum[j]+=i;
    }
    int ans=0;
    for(int i=n;i<=m;i++){
        ans+=abs(i-sum[i]-(i==1? 0:1));
        // cout<<abs(i-sum[i]-(i==1? 0:1))<<endl;
    }
    cout<<ans;
}

• Subtask 1: 120 / 120