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답안 #226274

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
226274 2020-04-23T09:17:22 Z quocnguyen1012 Savrsen (COCI17_savrsen) C++14
0 / 120
 116 ms 392 KB 
#include <bits/stdc++.h>

#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define ar array

using namespace std;
typedef long long ll;
typedef pair<int, int> ii;

const int maxn = 1e6 + 5, inf = 1e9;

int Ceil(int a, int b)
{
  if(a % b == 0) return a / b;
  return a / b + 1;
}

signed main(void)
{
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  #ifdef LOCAL
    freopen("A.INP", "r", stdin);
    freopen("A.OUT", "w", stdout);
  #endif // LOCAL
  int a, b;
  cin >> a >> b;
  ll res = 0;
  for(int i = a; i <= b; ++i)
    res += i;
  res *= 2;
  for(int d = 1; d <= b; ++d){
    int le = Ceil(a, d);
    int ri = b / d;
    //cerr << d << ' ' << le << ' ' << ri << '\n';
    res -= 1ll * d * (ri - le + 1);
  }
  cout << res;
}

Subtask #1
0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 5 ms 384 KB Output isn't correct
2 Incorrect 5 ms 384 KB Output isn't correct
3 Incorrect 6 ms 384 KB Output isn't correct
4 Incorrect 115 ms 384 KB Output isn't correct
5 Incorrect 116 ms 384 KB Output isn't correct
6 Incorrect 116 ms 392 KB Output isn't correct
7 Incorrect 110 ms 384 KB Output isn't correct
8 Incorrect 34 ms 384 KB Output isn't correct