제출 #384988

#제출 시각아이디문제언어결과실행 시간메모리
384988sabbirh654Savrsen (COCI17_savrsen)C++14
120 / 120
1298 ms39532 KiB
#include<bits/stdc++.h> using namespace std; int main() { int a, b; cin >> a >> b; b++; vector <int> v(b); for(int i = 1; i < b; i++) { int j = i + i; while(j < b) { v[j] += i; j += i; } } long long ans = 0; for(int i = a; i < b; i++) ans += abs(v[i] - i); cout << ans << endl; }
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