제출 #86566

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
86566		Pluton	Savrsen (COCI17_savrsen)	C++14	0 / 120	279 ms	664 KiB

savrsen

#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 600000
 
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, ans;
 
main ()
{
	speed;
	cin >> a >> b;
	for (int i = 1; i <= 1e7 +123; i ++)
	{
		if (i > b) break;
//		if (((b / i - 1)) <= 0)
//			break;
		if (i < a)
			ans += i * ((b / i) - (a - 1) / i);
		else
			ans += i * (b / i - (a - 1) / i - 1);   
//		cout << ans << ' ' ;
	}
	cout << abs ((a + b) * (b - a + 1) / 2 - ans);
}
//Coded by A....

컴파일 시 표준 에러 (stderr) 메시지

savrsen.cpp:32:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main ()
       ^

• Subtask 1: 0 / 120