oj.uz

답안 #147589

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
147589 2019-08-30T07:44:10 Z Ruxandra985 Savrsen (COCI17_savrsen) C++14
120 / 120
 2008 ms 78712 KB 
#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

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
120.0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1880 ms 78684 KB Output is correct
2 Correct 1905 ms 78628 KB Output is correct
3 Correct 1870 ms 78628 KB Output is correct
4 Correct 1872 ms 78628 KB Output is correct
5 Correct 2008 ms 78712 KB Output is correct
6 Correct 1952 ms 78636 KB Output is correct
7 Correct 1884 ms 78632 KB Output is correct
8 Correct 1884 ms 78712 KB Output is correct