#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#include <ext/rope>
using namespace __gnu_cxx;
typedef tree<long long, null_type, less<long long>,
rb_tree_tag, tree_order_statistics_node_update> pbds;
//less_equal for identical elements
#define DEBUG
#ifdef DEBUG
#define debug(...) printf(__VA_ARGS__);
#else
#define debug(...)
#endif
#define sf scanf
#define pf printf
#define fi first
#define se second
#define pb emplace_back
#define sz(x) (int)x.size()
#define mnto(x,y) x=min(x,(__typeof__(x))y)
#define mxto(x,y) x=max(x,(__typeof__(x))y)
#define INF 1023456789
#define LINF 1023456789123456789
#define all(x) x.begin(), x.end()
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
typedef tuple<int, int, int, int> iiii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<pll> vll;
struct node{
int s,e,m,v,lz;
node *l,*r;
node(int _s,int _e){
s=_s;e=_e;m=(s+e)/2;v=-1;lz=-1;
if(s!=e){
l=new node(s,m);
r=new node(m+1,e);
}
}
void propo(){
v=max(v,lz);
if(s!=e){
mxto(l->lz,lz);
mxto(r->lz,lz);
}
lz=-1;
}
void up(int x,int y,int nv){
if(s==x&&e==y){
mxto(lz,nv);return;
}
if(y<=m)l->up(x,y,nv);
else if(x>m)r->up(x,y,nv);
else l->up(x,m,nv),r->up(m+1,y,nv);
}
int qry(int x){
propo();
if(s==x&&e==x)return v;
if(x<=m)return l->qry(x);
else return r->qry(x);
}
}*root;
int n,d,t[2000005],arv,s[2000005],e[2000005];
vector<ii> v;
priority_queue<ii> pq;
int dp[2000005],cnt[2000005];
int rng(int l,int r){
return s[r]-e[r];
}
int main(){
sf("%d%d%d",&n,&d,&arv);
root=new node(0,n-1);
for(int i=0;i<n;++i){
sf("%d",&t[i]);
if(t[i]<=arv){
root->up(i,i,n);
int dist=arv-t[i];
if(dist!=0)root->up(i+1,min(i+dist,n-1),i);
}
}
int ans=0;
for(int i=0;i<n;++i){
if(t[i]<=arv){
++ans;continue;
}
if(root->qry(i)==-1)continue;
v.pb(root->qry(i),i-1);
}
sort(all(v));
d=min(d,sz(v));
for(ii pr:v){
++s[pr.fi];
++e[pr.se+1];
}
int res=0;
for(int i=1;i<n;++i){
s[i]+=s[i-1];
e[i]+=e[i-1];
mxto(res,s[i]-e[i]);
}
pf("%d\n",ans+sz(v)-res);
return 0;
int lo=-n,hi=n,mid;
while(lo<=hi){
mid=(lo+hi)/2;
dp[0]=s[0];cnt[0]=(s[0]>0);
for(int i=1;i<n;++i){
for(int j=0;j<i;++j){
if(dp[j]+rng(j+1,i)+mid>dp[i]){
dp[i]=dp[j]+rng(j+1,i)+mid;
cnt[i]=cnt[j]+1;
}
}
}
if(cnt[n-1]<=d){
res=mid;
lo=mid+1;
}
else hi=mid-1;
}
}
Compilation message
prison.cpp: In function 'int main()':
prison.cpp:86:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
86 | sf("%d%d%d",&n,&d,&arv);
| ^
prison.cpp:89:5: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
89 | sf("%d",&t[i]);
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Runtime error |
281 ms |
99620 KB |
Execution killed with signal 11 |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Runtime error |
34 ms |
15308 KB |
Execution killed with signal 11 |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
