oj.uz

답안 #1091891

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1091891 2024-09-22T13:22:51 Z plagia Savrsen (COCI17_savrsen) C++14
120 / 120
 449 ms 39768 KB 
#include <cstdlib>
#include <iostream>

const int MM = 1e7 + 10;
int tab[MM]{};

void fill_tab() {
	for (int i = 1; i < MM; i++) {
		for (int j = i * 2; j < MM; j += i) {
			tab[j] += i;	
		}
	}
}

int calculate_imperfection(const int &n) {
	return std::abs(n - tab[n]);
}

int main() {
	std::ios_base::sync_with_stdio(0);

	fill_tab();

	int a, b;
	std::cin >> a >> b;
	
	unsigned long long sum = 0;
	for (int i = a; i <= b; i++) {
		sum += calculate_imperfection(i);
	}

	std::cout << sum << std::endl;

	return 0;
}

Subtask #1
120.0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Correct 427 ms 39512 KB Output is correct
2 Correct 435 ms 39512 KB Output is correct
3 Correct 420 ms 39572 KB Output is correct
4 Correct 435 ms 39516 KB Output is correct
5 Correct 440 ms 39768 KB Output is correct
6 Correct 429 ms 39768 KB Output is correct
7 Correct 449 ms 39516 KB Output is correct
8 Correct 440 ms 39568 KB Output is correct