Submission #371039

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
371039	2021-02-25 16:10:47	valerikk	Snowball (JOI21_ho_t2)	C++17	100 / 100	1333 ms	10020 KiB

Main

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#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, q;
  cin >> n >> q;
  vector <ll> x(n);
  for (int i = 0; i < n; i++) cin >> x[i];
  vector <ll> w(q);
  for (int i = 0; i < q; i++) cin >> w[i];
  vector <ll> pref_mn(q + 1), pref_mx(q + 1);
  pref_mn[0] = pref_mx[0] = 0;
  ll sum = 0;
  for (int i = 0; i < q; i++) {
    sum += w[i];
    pref_mn[i + 1] = min(pref_mn[i], sum);
    pref_mx[i + 1] = max(pref_mx[i], sum);
  }
  auto get_mn = [&](ll val) {
    int l = -1, r = q + 1;
    while (r - l > 1) {
      int m = (l + r) / 2;
      if (pref_mn[m] <= val) r = m; else l = m;
    }
    return r;
 
 
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• Subtask 1: 33 / 33
• Subtask 2: 67 / 67