Submission #153840

#	Time	Username	Problem	Language	Result	Execution time	Memory
153840		bogdan_buzatu	Savrsen (COCI17_savrsen)	C++14	30 / 120	17 ms	8440 KiB

savrsen

#include <iostream>
#include <algorithm>
#define pozitie second
#define numar first
using namespace std;

int n,x,sol,ciur[1000100],a,b;
int main(){
    cin>>a>>b;
    if(a==1){
        sol=1;
    }
    for(int i=2;i<=b;i++){
        for(int j=i*2;j<=b;j+=i){
            ciur[j]+=i;
        }
        x=ciur[i]+1-i;
        x=max(x,-x);
        if(i>=a){
            sol+=x;
        }



    }


    cout<<sol;


}

• Subtask 1: 30 / 120