Submission #966621

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
966621	2024-04-20 06:53:51	Trisanu_Das	Discharging (NOI20_discharging)	C++17	100 / 100	103 ms	25808 KiB

Discharging

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#include <bits/stdc++.h>
#define int long long
using namespace std;
 
const int N = 1e6 + 11;
int a[N], dp[N];
int m[N], c[N], l, r;
 
int floor_div(int a, int b){
  return a / b - (a % b != 0 && a < 0);
}
 
int interX(int m1, int c1, int m2, int c2){
  return floor_div(c2 - c1, m1 - m2);
}
 
void add(int _m, int _c){
  while(r - l >= 2 && interX(m[r - 2], c[r - 2], _m, _c) <= interX(m[r - 2], c[r - 2], m[r - 1], c[r - 1])) r--;
  m[r] = _m, c[r] = _c; r++;
}
 
int qry(int x){
  while(r - l >= 2 && m[l] * x + c[l] >= m[l + 1] * x + c[l + 1]) l++;
  return m[l] * x + c[l];
}
 
int32_t main(){
  cin.tie(0); cout.tie(0)->sync_with_stdio(false);
  int n; cin >> n;
  for(int i = 0; i < n; i++) cin >> a[i];
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 13 / 13
• Subtask 3: 25 / 25
• Subtask 4: 11 / 11
• Subtask 5: 14 / 14
• Subtask 6: 28 / 28