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답안 #226276

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
226276 2020-04-23T09:22:42 Z quocnguyen1012 Savrsen (COCI17_savrsen) C++14
0 / 120
 115 ms 384 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;

ll solve(int a)
{
  ll res = 1ll * a * (a + 1) / 2;
  for(int d = 1; d <= a; ++d){
    res -= 1ll * d * (a / d - 1);
  }
  return res;
}

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;
  cout << solve(b) - solve(a - 1);
}

Subtask #1
0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 4 ms 384 KB Output isn't correct
2 Incorrect 5 ms 384 KB Output isn't correct
3 Incorrect 5 ms 384 KB Output isn't correct
4 Incorrect 115 ms 376 KB Output isn't correct
5 Incorrect 64 ms 256 KB Output isn't correct
6 Incorrect 60 ms 384 KB Output isn't correct
7 Incorrect 56 ms 384 KB Output isn't correct
8 Incorrect 18 ms 384 KB Output isn't correct