#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int>vi;
#define pb push_back
#define sz(v) (int)v.size()
#define FOR(i,a,b) for(int i=a; i<b; i++)
#define ROF(i,a,b) for(int i=b-1; i>=a; i--)
void ckmin(ll &x, ll y){x=min(x,y);}
void IO(){
#ifdef LOCAL
freopen("input.txt","r",stdin);
freopen("output.txt","w",stdout);
#endif
}
//--------------------------------------------------------------------
const int MX=5e3+10;
int N;
ll val[MX][MX];
vi a(MX);
vi t;
void upd(int i){
for(;i<sz(t); i+=i&-i) t[i]++;
}
int get(int i){
int ans=0;
for(;i;i-=i&-i) ans+=t[i];
return ans;
}
void compute(){
FOR(l,1,N+1){
vi b;
FOR(i,1,N+1) if(a[i]>=l) b.pb(a[i]);
int n=sz(b);
vi order(N+1),nb(N+1,0);
t.assign(N+1,0);
ROF(i,0,n){
order[b[i]]=i;
nb[b[i]]=get(b[i]);
upd(b[i]);
}
val[l][l]=order[l];
FOR(r,l+1,N+1)
val[l][r]=val[l][r-1]+order[r]-nb[r];
}
}
int main(){
IO();
cin>>N;
FOR(i,1,N+1) cin>>a[i];
compute();
ll dp[N+1];
dp[0]=0;
FOR(i,1,N+1){
dp[i]=1e18;
FOR(j,0,i) ckmin(dp[i],dp[j]+val[j+1][i]);
}
cout << dp[N] << endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
324 KB |
Output is correct |
| 5 |
Correct |
2 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
324 KB |
Output is correct |
| 5 |
Correct |
2 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| 11 |
Correct |
1 ms |
324 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
2 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
324 KB |
Output is correct |
| 5 |
Correct |
2 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| 11 |
Correct |
1 ms |
324 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
2 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 22 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 26 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 27 |
Correct |
3 ms |
1228 KB |
Output is correct |
| 28 |
Correct |
2 ms |
1232 KB |
Output is correct |
| 29 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 30 |
Correct |
2 ms |
1228 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
324 KB |
Output is correct |
| 5 |
Correct |
2 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| 11 |
Correct |
1 ms |
324 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
2 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 22 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 26 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 27 |
Correct |
3 ms |
1228 KB |
Output is correct |
| 28 |
Correct |
2 ms |
1232 KB |
Output is correct |
| 29 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 30 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 31 |
Correct |
13 ms |
5996 KB |
Output is correct |
| 32 |
Correct |
14 ms |
6068 KB |
Output is correct |
| 33 |
Correct |
14 ms |
6092 KB |
Output is correct |
| 34 |
Correct |
14 ms |
6092 KB |
Output is correct |
| 35 |
Correct |
14 ms |
6088 KB |
Output is correct |
| 36 |
Correct |
26 ms |
6012 KB |
Output is correct |
| 37 |
Correct |
14 ms |
6040 KB |
Output is correct |
| 38 |
Correct |
31 ms |
6080 KB |
Output is correct |
| 39 |
Correct |
32 ms |
6056 KB |
Output is correct |
| 40 |
Correct |
34 ms |
6012 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
324 KB |
Output is correct |
| 5 |
Correct |
2 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
320 KB |
Output is correct |
| 11 |
Correct |
1 ms |
324 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
2 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 22 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 26 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 27 |
Correct |
3 ms |
1228 KB |
Output is correct |
| 28 |
Correct |
2 ms |
1232 KB |
Output is correct |
| 29 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 30 |
Correct |
2 ms |
1228 KB |
Output is correct |
| 31 |
Correct |
13 ms |
5996 KB |
Output is correct |
| 32 |
Correct |
14 ms |
6068 KB |
Output is correct |
| 33 |
Correct |
14 ms |
6092 KB |
Output is correct |
| 34 |
Correct |
14 ms |
6092 KB |
Output is correct |
| 35 |
Correct |
14 ms |
6088 KB |
Output is correct |
| 36 |
Correct |
26 ms |
6012 KB |
Output is correct |
| 37 |
Correct |
14 ms |
6040 KB |
Output is correct |
| 38 |
Correct |
31 ms |
6080 KB |
Output is correct |
| 39 |
Correct |
32 ms |
6056 KB |
Output is correct |
| 40 |
Correct |
34 ms |
6012 KB |
Output is correct |
| 41 |
Correct |
649 ms |
117280 KB |
Output is correct |
| 42 |
Correct |
668 ms |
117440 KB |
Output is correct |
| 43 |
Correct |
663 ms |
117564 KB |
Output is correct |
| 44 |
Correct |
645 ms |
117552 KB |
Output is correct |
| 45 |
Correct |
681 ms |
117400 KB |
Output is correct |
| 46 |
Correct |
651 ms |
117452 KB |
Output is correct |
| 47 |
Correct |
649 ms |
117756 KB |
Output is correct |
| 48 |
Correct |
659 ms |
117640 KB |
Output is correct |
| 49 |
Correct |
653 ms |
117468 KB |
Output is correct |
| 50 |
Correct |
642 ms |
117432 KB |
Output is correct |
| 51 |
Correct |
659 ms |
117444 KB |
Output is correct |
| 52 |
Correct |
666 ms |
117544 KB |
Output is correct |
| 53 |
Correct |
665 ms |
117568 KB |
Output is correct |
| 54 |
Correct |
648 ms |
117432 KB |
Output is correct |
| 55 |
Correct |
652 ms |
117484 KB |
Output is correct |
