Submission #372223

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
372223	2021-02-27 09:41:59	dolphingarlic	Group Photo (JOI21_ho_t3)	C++14	100 / 100	1100 ms	752 KiB

Main

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#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
int n, pos[5001], dp[5001], bit1[5001], bit2[5001];
void update(int *bit, int pos, int val) {
  for (; pos <= n; pos += pos & -pos) bit[pos] += val;
}
int query(int *bit, int a, int b) {
  int ans = 0;
  for (; b; b -= b & -b) ans += bit[b];
  for (a--; a; a -= a & -a) ans -= bit[a];
  return ans;
}
int main() {
  cin.tie(0)->sync_with_stdio(0);
  cin >> n;
  for (int i = 1; i <= n; i++) {
    int a;
    cin >> a;
    pos[a] = i;
  }
  for (int i = 1; i <= n; i++) {
    dp[i] = INT_MAX;
    // First, get inversions from [1; i]
    int inversions = 0;
    for (int j = 1; j <= i; j++) {
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 32 / 32
• Subtask 4: 20 / 20
• Subtask 5: 36 / 36