Submission #147589

#	Time	Username	Problem	Language	Result	Execution time	Memory
147589		Ruxandra985	Savrsen (COCI17_savrsen)	C++14	120 / 120	2008 ms	78712 KiB

savrsen

#include <cstdio>
#include <iostream>
#define MAXI 10000010
using namespace std;
long long perf[MAXI];
int main()
{
    //freopen ("a.in" , "r" , stdin);
    //freopen ("a.out" , "w" , stdout);
    int a, b , i , j;
    long long sol;
    scanf ("%d%d",&a,&b);
    for (i=1;i<=MAXI/2;i++){
        for (j = 2 * i ; j<=MAXI ; j+=i)
            perf[j]+=i;
    }
    sol = 0;
    for (i=a;i<=b;i++)
        sol = sol + max ((long long)i - perf[i] , perf[i] - (long long)i);
    printf ("%lld",sol);
    return 0;
}

Compilation message (stderr)

savrsen.cpp: In function 'int main()':
savrsen.cpp:12:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf ("%d%d",&a,&b);
     ~~~~~~^~~~~~~~~~~~~~

• Subtask 1: 120 / 120