oj.uz

답안 #1055345

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1055345 2024-08-12T17:44:34 Z juicy 코알라 (JOI13_koala) C++17
100 / 100
 43 ms 4076 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
 
const int N = 1e5 + 5;
const long long inf = 1e18;
 
int k, m, d, a, n;
int t[N], b[N];
long long ft[2][N], dp[N];
 
void upd(long long *s, int i, long long x) {
  for (; i < N; i += i & -i) {
    s[i] = max(s[i], x);
  }
}
 
long long qry(long long *s, int i) {
  long long res = -inf;
  for (; i; i -= i & -i) {
    res = max(res, s[i]);
  }
  return res;
}
 
int main() {
  ios::sync_with_stdio(false); cin.tie(nullptr);
 
  cin >> k >> m >> d >> a >> n;
  t[0] = k, t[n + 1] = m;
  vector<int> comp = {k % d, m % d};
  for (int i = 1; i <= n; ++i) {
    cin >> t[i] >> b[i];
    comp.push_back(t[i] % d);
  }
  sort(comp.begin(), comp.end());
  comp.erase(unique(comp.begin(), comp.end()), comp.end());
  for (auto it : {0, 1}) {
    fill(ft[it] + 1, ft[it] + N, -inf);
  }
  for (int i = 0; i <= n + 1; ++i) {
    int p = lower_bound(comp.begin(), comp.end(), t[i] % d) - comp.begin() + 1;
    if (i) {
      dp[i] = max(qry(ft[0], p), qry(ft[1], N - p)) - (long long) (t[i] / d) * a + b[i];
    }
    upd(ft[0], p + 1, dp[i] + (long long) (t[i] / d - 1) * a);
    upd(ft[1], N - p, dp[i] + (long long) (t[i] / d) * a);
  }
  cout << dp[n + 1];
  return 0;
}

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2520 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 0 ms 2652 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2652 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 3952 KB Output is correct
2 Correct 28 ms 4060 KB Output is correct
3 Correct 10 ms 3548 KB Output is correct
4 Correct 19 ms 4028 KB Output is correct
5 Correct 12 ms 3552 KB Output is correct
6 Correct 11 ms 3296 KB Output is correct
7 Correct 21 ms 3944 KB Output is correct

Subtask #3
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 34 ms 4076 KB Output is correct
2 Correct 43 ms 4060 KB Output is correct
3 Correct 27 ms 4056 KB Output is correct
4 Correct 23 ms 4060 KB Output is correct
5 Correct 21 ms 3548 KB Output is correct
6 Correct 24 ms 3296 KB Output is correct