oj.uz

답안 #86455

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
86455 2018-11-26T10:44:19 Z qwerty12345 Savrsen (COCI17_savrsen) C++14
120 / 120
 2073 ms 78852 KB 
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#include <bits/stdc++.h>
#include <iostream>

#define for0(i , v) for (int i = 0 ; i < v.size() ; i++)
#define for1(i , n) for (int i = 1 ; i <= n ; i++)
#define AIDS ios_base::sync_with_stdio(0)
#define pb push_back
#define pp pop_back
#define sz(a) a.size()
#define all(x) x.begin() , x.end()
#define F first
#define S second
#define mp make_pair
#define ld long double
#define ll long long
#define pii pair<int, int>
#define in insert
#define vi vector <int>
#define vvi vector <vi>
#define Case "Case " << num << ": "

const int N = 1e6 + 3;
const ll INF = 1e18 + 100;
const int inf = 1e9 + 123;
const int MOD = 1e9 + 7;
const int dx[] = {0 , 1 , 0 , -1 , 0};
const int dy[] = {0 , 0 , 1 , 0 , -1};
const char dd[] = {' ' , 'D' , 'R' , 'U' , 'L'};

using namespace std;

ll sum[10000012];
void resheto() {
	for (int i = 2 ; i <= 10000000 ; i++) {
		for (int j = i + i ; j <= 10000000 ; j+= i) {
			sum[j] += i;
		}
	}
}

main () {
//  freopen("input.in", "r", stdin);
//  freopen("output.out", "w", stdout);
	AIDS;
	int a , b;
	cin >> a >> b;
	resheto();
	ll cnt = 0;
	sum[1] = 1;
	for (int i = a ; i <= b ; i++) {
		cnt += abs(i - sum[i] - 1);
	}
	cout << cnt;
}

Compilation message

savrsen.cpp:70:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () {
       ^

Subtask #1
120.0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2027 ms 78688 KB Output is correct
2 Correct 1980 ms 78844 KB Output is correct
3 Correct 1955 ms 78844 KB Output is correct
4 Correct 1982 ms 78844 KB Output is correct
5 Correct 2020 ms 78844 KB Output is correct
6 Correct 2013 ms 78844 KB Output is correct
7 Correct 2073 ms 78852 KB Output is correct
8 Correct 2021 ms 78852 KB Output is correct