oj.uz

답안 #633877

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
633877 2022-08-23T11:00:08 Z inksamurai Savrsen (COCI17_savrsen) C++17
0 / 120
 1223 ms 78576 KB 
#include <bits/stdc++.h>
#define int ll
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define rng(i,c,n) for(int i=c;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3PGDklf ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vector<int>;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}
// e

const int _n=10000001;

int ps[_n];

signed main(){
_3PGDklf;
	for(int i=1;i<_n;i++){
		for(int j=2*i;j<_n;j+=i){
			ps[j]-=i;
		}
	}
	for(int i=1;i<_n;i++){
		ps[i]+=ps[i-1];
	}
	int l,r;
	cin>>l>>r;
	auto f=[&](int n){
		return n==0?0:n*(n+1)/2+ps[n];
	};
	print(f(r)-f(l-1));
}

Subtask #1
0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1144 ms 78576 KB Output isn't correct
2 Incorrect 1151 ms 78572 KB Output isn't correct
3 Incorrect 1223 ms 78576 KB Output isn't correct
4 Incorrect 1082 ms 78572 KB Output isn't correct
5 Incorrect 1090 ms 78572 KB Output isn't correct
6 Incorrect 1159 ms 78576 KB Output isn't correct
7 Incorrect 1114 ms 78572 KB Output isn't correct
8 Incorrect 1103 ms 78572 KB Output isn't correct