oj.uz

답안 #86576

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
86576 2018-11-26T16:29:28 Z Pluton Savrsen (COCI17_savrsen) C++14
120 / 120
 2193 ms 79128 KB 
#include <bits/stdc++.h>
 
#define ld long double
#define ll long long
#define sz size()
#define all(xx) xx.begin(),xx.end()
#define pb push_back
#define in insert
#define er erase
#define S second
#define F first
#define pii pair <int, int>
#define to_be continue
#define mp make_pair
#define stop exit (0)
#define fname ""
#define speed ios_base::sync_with_stdio(0);cin.tie(0)
#define input freopen (fname".in", "r", stdin)
#define output freopen (fname".out", "w", stdout)
#define int ll
#define N 20000000
 
using namespace std;
 
const int inf = 1e9 + 123;
const ll INF = 1e18 + 123;
const double pi = acos (-1.0);
const ld eps = 1e-3;
 
int a, b, sum, f[N];
 
main ()
{
	speed;
	cin >> a >> b;
	f[1] = 1;
	for (int i = 2; i <= 1e7 + 123; i ++)
		f[i] = i - 1; 
	for (int i = 2; i <= 1e7 + 123; i ++)
	{
		for (int j = i + i; j <= 1e7 + 123; j += i)
		{
			f[j] -= i;
		}
	}
	for (int i = a; i <= b; i ++)                             
		sum += abs (f[i]);
	cout << sum;                 
}                                                 
//Coded by A....

Compilation message

savrsen.cpp:32:7: 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 2193 ms 78584 KB Output is correct
2 Correct 2139 ms 78736 KB Output is correct
3 Correct 2084 ms 78912 KB Output is correct
4 Correct 2073 ms 78912 KB Output is correct
5 Correct 2072 ms 78912 KB Output is correct
6 Correct 2073 ms 78912 KB Output is correct
7 Correct 2177 ms 79004 KB Output is correct
8 Correct 2061 ms 79128 KB Output is correct