// Success consists of going from failure to failure without loss of enthusiasm
#include <bits/stdc++.h>
using namespace std;
#define nl '\n'
template<class T> using V = vector<T>;
struct BIT {
int N; V<int> data;
void init(int n) { N = n; data = V<int>(N, 0); }
void add(int p, int x) { for(++p;p<=N;p+=p&-p) data[p-1] += x; }
int sum(int l, int r) { return sum(r+1) - sum(l); }
int sum(int r) { int s = 0; for(;r;r-=r&-r) s += data[r-1]; return s; }
};
const int INF = 1e9 + 10;
int main() {
cin.tie(0)->sync_with_stdio(0);
int N; cin >> N;
V<int> A(N); for(auto& x : A) cin >> x;
V<int> dp(N+1, INF); dp[0] = 0;
for(int x = 0; x <= N; x++) {
BIT B; B.init(N+1);
V<int> amt(N+1);
int seen = 0;
for(int i = 0; i < N; i++) if (A[i] > x) {
int R = N - i - 1;
int lx = R - (N - x - seen - 1);
int l = R - (N - A[i] - B.sum(A[i], N));
// cout << seen << " " << l << " " << lx << endl;
amt[A[i]] = seen - (l - lx);
// cout << A[i] << " " << amt[A[i]] << endl;
B.add(A[i], 1); seen++;
}
int cost = dp[x];
// cout << "X: " << x << " " << cost << endl;
for(int i = x + 1; i <= N; i++) {
cost += amt[i];
// cout << i << " " << cost << endl;
dp[i] = min(dp[i], cost);
}
// cout << endl;
}
cout << dp[N] << nl;
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
320 KB |
Output is correct |
| 5 |
Correct |
0 ms |
320 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
324 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
320 KB |
Output is correct |
| 5 |
Correct |
0 ms |
320 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
324 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
316 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
320 KB |
Output is correct |
| 5 |
Correct |
0 ms |
320 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
324 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
316 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
324 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
212 KB |
Output is correct |
| 27 |
Correct |
1 ms |
320 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
1 ms |
212 KB |
Output is correct |
| 30 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
320 KB |
Output is correct |
| 5 |
Correct |
0 ms |
320 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
324 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
316 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
324 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
212 KB |
Output is correct |
| 27 |
Correct |
1 ms |
320 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
1 ms |
212 KB |
Output is correct |
| 30 |
Correct |
1 ms |
212 KB |
Output is correct |
| 31 |
Correct |
5 ms |
212 KB |
Output is correct |
| 32 |
Correct |
4 ms |
212 KB |
Output is correct |
| 33 |
Correct |
4 ms |
212 KB |
Output is correct |
| 34 |
Correct |
5 ms |
212 KB |
Output is correct |
| 35 |
Correct |
5 ms |
212 KB |
Output is correct |
| 36 |
Correct |
5 ms |
340 KB |
Output is correct |
| 37 |
Correct |
5 ms |
316 KB |
Output is correct |
| 38 |
Correct |
5 ms |
212 KB |
Output is correct |
| 39 |
Correct |
5 ms |
212 KB |
Output is correct |
| 40 |
Correct |
5 ms |
316 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
320 KB |
Output is correct |
| 5 |
Correct |
0 ms |
320 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
324 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Correct |
0 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
0 ms |
316 KB |
Output is correct |
| 16 |
Correct |
0 ms |
212 KB |
Output is correct |
| 17 |
Correct |
0 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
212 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
324 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
212 KB |
Output is correct |
| 27 |
Correct |
1 ms |
320 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| 29 |
Correct |
1 ms |
212 KB |
Output is correct |
| 30 |
Correct |
1 ms |
212 KB |
Output is correct |
| 31 |
Correct |
5 ms |
212 KB |
Output is correct |
| 32 |
Correct |
4 ms |
212 KB |
Output is correct |
| 33 |
Correct |
4 ms |
212 KB |
Output is correct |
| 34 |
Correct |
5 ms |
212 KB |
Output is correct |
| 35 |
Correct |
5 ms |
212 KB |
Output is correct |
| 36 |
Correct |
5 ms |
340 KB |
Output is correct |
| 37 |
Correct |
5 ms |
316 KB |
Output is correct |
| 38 |
Correct |
5 ms |
212 KB |
Output is correct |
| 39 |
Correct |
5 ms |
212 KB |
Output is correct |
| 40 |
Correct |
5 ms |
316 KB |
Output is correct |
| 41 |
Correct |
305 ms |
404 KB |
Output is correct |
| 42 |
Correct |
316 ms |
412 KB |
Output is correct |
| 43 |
Correct |
300 ms |
408 KB |
Output is correct |
| 44 |
Correct |
293 ms |
340 KB |
Output is correct |
| 45 |
Correct |
298 ms |
408 KB |
Output is correct |
| 46 |
Correct |
310 ms |
400 KB |
Output is correct |
| 47 |
Correct |
307 ms |
404 KB |
Output is correct |
| 48 |
Correct |
307 ms |
460 KB |
Output is correct |
| 49 |
Correct |
306 ms |
412 KB |
Output is correct |
| 50 |
Correct |
303 ms |
340 KB |
Output is correct |
| 51 |
Correct |
309 ms |
340 KB |
Output is correct |
| 52 |
Correct |
305 ms |
408 KB |
Output is correct |
| 53 |
Correct |
310 ms |
404 KB |
Output is correct |
| 54 |
Correct |
304 ms |
332 KB |
Output is correct |
| 55 |
Correct |
308 ms |
404 KB |
Output is correct |
