#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pr pair<int, int>
#define prr pair<pr, int>
#define f first
#define s second
#define pr pair<int, int>
#define pb push_back
const int ndim=2e5+1;
vector<int> par(ndim);
vector<int> psize(ndim);
int main(){
int n, m; cin>>n>>m;
vector<int> d(n+1);
for (int i=1; i<=n; i++) cin>>d[i];
d[0]=0;
multiset<pr> st;
vector<int> par(n+1);
for (int i=0; i<=n; i++) par[i]=i;
st.insert({d[0], 0});
for (int i=1; i<=n; i++){
auto it=st.upper_bound({d[i], i});
if(it==st.end()) {
it--; par[i]=it->s;
st.insert({d[i], i});
}
else{
st.erase(it);
st.insert({d[i], i});
it=st.lower_bound({d[i], i});
it--;
par[i]=it->s;
}
}
vector<int> dp(n+1, 0);
vector<int> ds(n+1);
ds[0]=d[0];
int res=0;
for (int i=1; i<=n; i++){
if(d[i]-ds[i-1]>m || d[i]-ds[par[i]]>m*(i-par[i])){
//cout<<" i= "<<i<<endl;
//cout<<" d[i]-ds[i-1]/m/ d[i]-ds[par[i]]/m*(i-par[i]="<<d[i]-ds[i-1]<<" "<<m<<" "<< d[i]-ds[par[i]]<<" "<<m*(i-par[i])<<endl;
ds[i]=min(ds[i-1]+m, m*(i-par[i])+ds[par[i]]);
res++;
}
else ds[i]=d[i];
}
cout<<res<<endl;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
1884 KB |
Output is correct |
2 |
Correct |
2 ms |
1884 KB |
Output is correct |
3 |
Correct |
1 ms |
1884 KB |
Output is correct |
4 |
Correct |
1 ms |
1884 KB |
Output is correct |
5 |
Correct |
1 ms |
1884 KB |
Output is correct |
6 |
Correct |
1 ms |
1884 KB |
Output is correct |
7 |
Correct |
1 ms |
1884 KB |
Output is correct |
8 |
Correct |
2 ms |
1884 KB |
Output is correct |
9 |
Correct |
2 ms |
1884 KB |
Output is correct |
10 |
Correct |
1 ms |
1884 KB |
Output is correct |
11 |
Correct |
1 ms |
1884 KB |
Output is correct |
12 |
Incorrect |
1 ms |
1884 KB |
Output isn't correct |
13 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
1884 KB |
Output is correct |
2 |
Correct |
2 ms |
1884 KB |
Output is correct |
3 |
Correct |
1 ms |
1884 KB |
Output is correct |
4 |
Correct |
1 ms |
1884 KB |
Output is correct |
5 |
Correct |
1 ms |
1884 KB |
Output is correct |
6 |
Correct |
1 ms |
1884 KB |
Output is correct |
7 |
Correct |
1 ms |
1884 KB |
Output is correct |
8 |
Correct |
2 ms |
1884 KB |
Output is correct |
9 |
Correct |
2 ms |
1884 KB |
Output is correct |
10 |
Correct |
1 ms |
1884 KB |
Output is correct |
11 |
Correct |
1 ms |
1884 KB |
Output is correct |
12 |
Incorrect |
1 ms |
1884 KB |
Output isn't correct |
13 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
1884 KB |
Output is correct |
2 |
Correct |
2 ms |
1884 KB |
Output is correct |
3 |
Correct |
1 ms |
1884 KB |
Output is correct |
4 |
Correct |
1 ms |
1884 KB |
Output is correct |
5 |
Correct |
1 ms |
1884 KB |
Output is correct |
6 |
Correct |
1 ms |
1884 KB |
Output is correct |
7 |
Correct |
1 ms |
1884 KB |
Output is correct |
8 |
Correct |
2 ms |
1884 KB |
Output is correct |
9 |
Correct |
2 ms |
1884 KB |
Output is correct |
10 |
Correct |
1 ms |
1884 KB |
Output is correct |
11 |
Correct |
1 ms |
1884 KB |
Output is correct |
12 |
Incorrect |
1 ms |
1884 KB |
Output isn't correct |
13 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
1884 KB |
Output is correct |
2 |
Correct |
2 ms |
1884 KB |
Output is correct |
3 |
Correct |
1 ms |
1884 KB |
Output is correct |
4 |
Correct |
1 ms |
1884 KB |
Output is correct |
5 |
Correct |
1 ms |
1884 KB |
Output is correct |
6 |
Correct |
1 ms |
1884 KB |
Output is correct |
7 |
Correct |
1 ms |
1884 KB |
Output is correct |
8 |
Correct |
2 ms |
1884 KB |
Output is correct |
9 |
Correct |
2 ms |
1884 KB |
Output is correct |
10 |
Correct |
1 ms |
1884 KB |
Output is correct |
11 |
Correct |
1 ms |
1884 KB |
Output is correct |
12 |
Incorrect |
1 ms |
1884 KB |
Output isn't correct |
13 |
Halted |
0 ms |
0 KB |
- |