Submission #605822

#	Time	Username	Problem	Language	Result	Execution time	Memory
605822		jjiangly	Foehn Phenomena (JOI17_foehn_phenomena)	C++14	30 / 100	8 ms	572 KiB

foehn_phenomena

#include <bits/stdc++.h>
using namespace std;

#define all(x) x.begin(), x.end()
#define siz(x) int(x.size())
#define ll long long
#define ar array
#define vt vector
#define inf INT_MAX
#define lnf LLONG_MAX

const int nxm = int(2e3) + 7;
ll n, q, s, t, a[nxm];

namespace sub1 {
  ll l, r, x;
  void exe() {
    while (q--) {
      cin >> l >> r >> x;
      for (int i = l; i <= r; ++i) {
        a[i] += x;
      }
      ll ans = 0;
      for (int i = 1; i <= n; ++i) {
        if (a[i] > a[i - 1]) {
          ans -= (a[i] - a[i - 1]) * s;
        } else {
          ans += (a[i - 1] - a[i]) * t;
        }
      }
      cout << ans << "\n";
    }
  }
};

int subtask() {
  if (n <= 2000 && q <= 2000) {
    return 1;
  }
  return 2;
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  cin >> n >> q >> s >> t;
  for (int i = 0; i <= n; ++i) {
    cin >> a[i];
  }
  if (subtask() == 1) {
    sub1::exe();
  }

  return 0;
}

• Subtask 1: 30 / 30
• Subtask 2: 0 / 10
• Subtask 3: 0 / 60