| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 519050 |
2022-01-25T13:22:30 Z |
A_D |
Global Warming (CEOI18_glo) |
C++14 |
|
658 ms |
37048 KB |
#include <bits/stdc++.h>
#define int long long
#define ii pair<int,int>
#define F first
#define S second
using namespace std;
const int N=2e5+100;
int a[N];
map<int,int> mp;
set<int> st;
int seg1[4*N];
int seg2[4*N];
int b[N];
int freq[N];
int get1(int p,int s,int e,int a,int b)
{
if(a<=s&&e<=b)return seg1[p];
if(s>b||e<a)return 0;
int mid=(s+e)/2;
return max(get1(p*2,s,mid,a,b),get1(p*2+1,mid+1,e,a,b));
}
void update1(int p,int s,int e,int i,int v)
{
if(s==e){
seg1[p]=v;
return;
}
int mid=(s+e)/2;
if(i<=mid){
update1(p*2,s,mid,i,v);
}
else{
update1(p*2+1,mid+1,e,i,v);
}
seg1[p]=max(seg1[p*2],seg1[p*2+1]);
}
int get2(int p,int s,int e,int a,int b)
{
if(a<=s&&e<=b)return seg2[p];
if(s>b||e<a)return 0;
int mid=(s+e)/2;
return max(get2(p*2,s,mid,a,b),get2(p*2+1,mid+1,e,a,b));
}
void update2(int p,int s,int e,int i,int v)
{
if(s==e){
seg2[p]=v;
return;
}
int mid=(s+e)/2;
if(i<=mid){
update2(p*2,s,mid,i,v);
}
else{
update2(p*2+1,mid+1,e,i,v);
}
seg2[p]=max(seg2[p*2],seg2[p*2+1]);
}
void solve()
{
int n,x;
cin>>n>>x;
for(int i=1;i<=n;i++){
scanf("%lld",&a[i]);
st.insert(a[i]);
}
int cnt=1;
for(auto x:st){
freq[cnt]=x;
mp[x]=cnt++;
}
for(int i=1;i<=n;i++){
a[i]=mp[a[i]];
}
for(int i=1;i<=n;i++){
int v=0;
if(a[i]!=1){
v=get1(1,1,n,1,a[i]-1);
}
//cout<<v<<" ";
b[i]=get1(1,1,n,a[i],a[i]);
update1(1,1,n,a[i],v+1);
// cout<<b[i]<<" ";
}
//cout<<endl;
int ans=seg1[1];
// cout<<seg1[1]<<endl;
for(int i=n;i>1;i--){
int v=0;
if(a[i]!=n){
v=get2(1,1,n,a[i]+1,n);
}
update2(1,1,n,a[i],v+1);
//cout<<b[i]<<" ";
update1(1,1,n,a[i],b[i]);
// for(int j=1;j<=n;j++)cout<<get1(1,1,n,a[j],a[j])<<" ";cout<<endl;
int l=1,r=cnt-1,ann;
while(l<=r){
int mid=(l+r)/2;
if(freq[mid]<freq[a[i]]+x){
l=mid+1;
ann=mid;
}
else{
r=mid-1;
}
}
// cout<<get1(1,1,n,1,ann)<<" "<<get2(1,1,n,a[i],n)<<endl;
ans=max(ans,get2(1,1,n,a[i],n)+get1(1,1,n,1,ann));
}
// cout<<endl;
cout<<ans<<endl;
}
main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int t=1;
//cin>>t;
while(t--){
solve();
}
}
Compilation message
glo.cpp:122:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
122 | main()
| ^~~~
glo.cpp: In function 'void solve()':
glo.cpp:72:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
72 | scanf("%lld",&a[i]);
| ~~~~~^~~~~~~~~~~~~~
glo.cpp:117:44: warning: 'ann' may be used uninitialized in this function [-Wmaybe-uninitialized]
117 | ans=max(ans,get2(1,1,n,a[i],n)+get1(1,1,n,1,ann));
| ~~~~^~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
658 ms |
35020 KB |
Output is correct |
| 2 |
Incorrect |
579 ms |
37048 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
107 ms |
8792 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
249 ms |
17628 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
