제출 #1244839

#제출 시각아이디문제언어결과실행 시간메모리
1244839warrennSavrsen (COCI17_savrsen)C++20
120 / 120
903 ms78688 KiB
#include<bits/stdc++.h> using namespace std; #define int long long const int maxn=1e7; int tot[maxn+1]; signed main(){ for(int q=1;q<=maxn;q++){ for(int w=2*q;w<=maxn;w+=q){ tot[w]+=q; } } int l,r; cin>>l>>r; int ans=0; for(int q=l;q<=r;q++){ ans+=abs(tot[q]-q); } cout<<ans<<endl; }
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