oj.uz

답안 #706596

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
706596 2023-03-07T06:26:22 Z YugiHacker Savrsen (COCI17_savrsen) C++14
120 / 120
 712 ms 39444 KB 
#include<bits/stdc++.h>
#define el cout<<"\n"
#define f0(i,n) for(int i=0;i<n;++i)
#define f1(i,n) for(int i=1;i<=n;++i)
#define maxn 10000007
using namespace std;
int d[maxn];
main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int a, b;
    cin >> a >> b;
    d[1] = 1;
    for (int i=2; i*i <= b; i++)
    {
        for (int j=i*i; j<=b; j+=i)
        {
            d[j] += i;
            if (j != i*i) d[j] += j/i;
        }
    }
    long long ans = 0;
    for (int i=a; i<=b; i++) ans += abs(d[i]+1-i);
    cout << ans;
}

Compilation message

savrsen.cpp:8:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    8 | main()
      | ^~~~

Subtask #1
120.0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 4 ms 724 KB Output is correct
4 Correct 689 ms 39408 KB Output is correct
5 Correct 712 ms 39440 KB Output is correct
6 Correct 711 ms 39444 KB Output is correct
7 Correct 645 ms 36376 KB Output is correct
8 Correct 125 ms 10196 KB Output is correct